With this guide I will try to explain on how to run the 4 past games with DOSBox (http://dosbox.sourceforge.net/). Note that the sole purpose of this guide is to get the games to work with the official DOSBox builds, and not to add any additional flashy effects that may improve the visual quality of the game.
The first thing you need to do is to go to the official website of DOSBox and download it's latest release (currently 0.73), which is free. In the most majority of cases, you need to download the "Win32 installer" version. Note that this guide is mainly towards Windows users. While DOSBox is a cross-platform program, there may be differences in the mount commands.
When it's downloaded, it's time to install it where you see fit. But be aware of that the games of this guide will be installed in the same drive/partition, so be sure you got enough space (which shouldn't really be a problems as the games are relatively small).
After DOSBox is installed, go to the folder where you installed it and create a new folder called "Games".
It's important to know that DOSBox is an emulator, and as such a large resource hog for the CPU. One can speed up and down the emulation by increasing or decreasing the amount of cycles of DOSBox, and if a high amount of cycles run much slower than it should be, then your CPU is too slow. To increase the cycles press CTRL+F12 and to decrease them press CTRL+F11.
You can switch between fullscreen and window mode in DOSBox by pressing LEFT ALT+RETUR.
!IMPORTANT!
Every guide in here ends after creating a special config file for each game. The easiest way to run DOSBox with this specific config file, would be the following:
Go to the folder where you installed DOSBox, and right-click on the DOSBox executable and create a new shortcut for it.
Rename the shortcut to the game you want it to start. For example; Daggerfall.
Right-click on the shortcut and go into the properties and change the "Path_where_you_installed_Dosbox\dosbox.exe" to "Path_where_you_installed_Dosbox\dosbox.exe" -conf daggerfall.conf. Add an additional -noconsole at the end if you want to get rid of the second text window of DOSBox.
That's it. Feel free to copy the shortcut to your start menu, desktop or wherever you think it should be; and just double-click on it to run the game. You can also change the icon if you want. Daggerfall, Battlespire and Redguard have proper icons, so you can use those.
The config files may also be incompatible with eachother between the DOSBox versions. A config written for DOSBox 0.63 may not work with DOSBox 0.65.
DOSBox 0.73 won't make a dosbox.conf file where the program is installed, to make one you have to write config -writeconf dosbox.conf in DOSBox.
http://www.gamesas.com/index.php?act=findpost&pid=6877259
http://www.gamesas.com/index.php?act=findpost&pid=6877868
http://www.gamesas.com/index.php?act=findpost&pid=6878724
http://www.gamesas.com/index.php?act=findpost&pid=6879793