Post the contents of your Dosbox config file and we'll take a look at it, You'll find it listed under the Dosbox shortcut in your - start all programs list. Open it with notepad and paste the full contents into your post.
I'll upload it tomorrow.
Edit:
Here:
# This is the configurationfile for DOSBox 0.72.# Lines starting with a # are commentlines.# They are used to (briefly) document the effect of each option.[sdl]# fullscreen -- Start dosbox directly in fullscreen.# fulldouble -- Use double buffering in fullscreen.# fullresolution -- What resolution to use for fullscreen: original or fixed size (e.g. 1024x768).# windowresolution -- Scale the window to this size IF the output device supports hardware scaling.# output -- What to use for output: surface,overlay,opengl,openglnb,ddraw.# autolock -- Mouse will automatically lock, if you click on the screen.# sensitiviy -- Mouse sensitivity.# waitonerror -- Wait before closing the console if dosbox has an error.# priority -- Priority levels for dosbox: lowest,lower,normal,higher,highest,pause (when not focussed).# Second entry behind the comma is for when dosbox is not focused/minimized.# mapperfile -- File used to load/save the key/event mappings from.# usescancodes -- Avoid usage of symkeys, might not work on all operating systems.fullscreen=falsefulldouble=truefullresolution=originalwindowresolution=originaloutput=surfaceautolock=truesensitivity=100waitonerror=truepriority=higher,normalmapperfile=mapper.txtusescancodes=true[dosbox]# language -- Select another language file.# memsize -- Amount of memory DOSBox has in megabytes.# machine -- The type of machine tries to emulate:hercules,cga,tandy,pcjr,vga.# captures -- Directory where things like wave,midi,screenshot get captured.language=machine=vgacaptures=capturememsize=32[render]# frameskip -- How many frames DOSBox skips before drawing one.# aspect -- Do aspect correction, if your output method doesn't support scaling this can slow things down!.# scaler -- Scaler used to enlarge/enhance low resolution modes.# Supported are none,normal2x,normal3x,advmame2x,advmame3x,hq2x,hq3x,# 2xsai,super2xsai,supereagle,advinterp2x,advinterp3x,# tv2x,tv3x,rgb2x,rgb3x,scan2x,scan3x.# If forced is appended (like scaler=hq2x forced), the scaler will be used# even if the result might not be desired.frameskip=7aspect=truescaler=normal2x[cpu]# core -- CPU Core used in emulation: normal,simple,dynamic,auto.# auto switches from normal to dynamic if appropriate.# cycles -- Amount of instructions DOSBox tries to emulate each millisecond.# Setting this value too high results in sound dropouts and lags.# You can also let DOSBox guess the correct value by setting it to max.# The default setting (auto) switches to max if appropriate.# cycleup -- Amount of cycles to increase/decrease with keycombo.# cycledown Setting it lower than 100 will be a percentage.core=dynamiccycles=15000cycleup=500cycledown=20[mixer]# nosound -- Enable silent mode, sound is still emulated though.# rate -- Mixer sample rate, setting any devices higher than this will# probably lower their sound quality.# blocksize -- Mixer block size, larger blocks might help sound stuttering# but sound will also be more lagged.# prebuffer -- How many milliseconds of data to keep on top of the blocksize.nosound=falserate=22050blocksize=2048prebuffer=10[midi]# mpu401 -- Type of MPU-401 to emulate: none, uart or intelligent.# device -- Device that will receive the MIDI data from MPU-401.# This can be default,alsa,oss,win32,coreaudio,none.# config -- Special configuration options for the device. In Windows put# the id of the device you want to use. See README for details.mpu401=intelligentdevice=defaultconfig=[sblaster]# sbtype -- Type of sblaster to emulate:none,sb1,sb2,sbpro1,sbpro2,sb16.# sbbase,irq,dma,hdma -- The IO/IRQ/DMA/High DMA address of the soundblaster.# mixer -- Allow the soundblaster mixer to modify the DOSBox mixer.# oplmode -- Type of OPL emulation: auto,cms,opl2,dualopl2,opl3.# On auto the mode is determined by sblaster type.# All OPL modes are 'Adlib', except for CMS.# oplrate -- Sample rate of OPL music emulation.sbtype=sb16sbbase=220irq=7dma=1hdma=5mixer=trueoplmode=autooplrate=22050[gus]# gus -- Enable the Gravis Ultrasound emulation.# gusbase,irq1,irq2,dma1,dma2 -- The IO/IRQ/DMA addresses of the # Gravis Ultrasound. (Same IRQ's and DMA's are OK.)# gusrate -- Sample rate of Ultrasound emulation.# ultradir -- Path to Ultrasound directory. In this directory# there should be a MIDI directory that contains# the patch files for GUS playback. Patch sets used# with Timidity should work fine.gus=truegusrate=22050gusbase=240irq1=5irq2=5dma1=3dma2=3ultradir=C:\ULTRASND[speaker]# pcspeaker -- Enable PC-Speaker emulation.# pcrate -- Sample rate of the PC-Speaker sound generation.# tandy -- Enable Tandy Sound System emulation (off,on,auto).# For auto Tandysound emulation is present only if machine is set to tandy.# tandyrate -- Sample rate of the Tandy 3-Voice generation.# disney -- Enable Disney Sound Source emulation. Covox Voice Master and Speech Thing compatible.pcspeaker=truepcrate=22050tandy=autotandyrate=22050disney=true[joystick]# joysticktype -- Type of joystick to emulate: auto (default), none,# 2axis (supports two joysticks,# 4axis (supports one joystick, first joystick used),# 4axis_2 (supports one joystick, second joystick used),# fcs (Thrustmaster), ch (CH Flightstick).# none disables joystick emulation.# auto chooses emulation depending on real joystick(s).# timed -- enable timed intervals for axis. (false is old style behaviour).# autofire -- continuously fires as long as you keep the button pressed.# swap34 -- swap the 3rd and the 4th axis. can be useful for certain joysticks.# buttonwrap -- enable button wrapping at the number of emulated buttons.joysticktype=autotimed=trueautofire=falseswap34=falsebuttonwrap=true[serial]# serial1-4 -- set type of device connected to com port.# Can be disabled, dummy, modem, nullmodem, directserial.# Additional parameters must be in the same line in the form of# parameter:value. Parameter for all types is irq.# for directserial: realport (required), rxdelay (optional).# for modem: listenport (optional).# for nullmodem: server, rxdelay, txdelay, telnet, usedtr,# transparent, port, inhsocket (all optional).# Example: serial1=modem listenport:5000serial1=dummyserial2=dummyserial3=disabledserial4=disabled[dos]# xms -- Enable XMS support.# ems -- Enable EMS support.# umb -- Enable UMB support.# keyboardlayout -- Language code of the keyboard layout (or none).xms=trueems=trueumb=truekeyboardlayout=none[ipx]# ipx -- Enable ipx over UDP/IP emulation.ipx=false[autoexec]# Lines in this section will be run at startup.