I know the system is borked because 'consoles', but is there any way to accurately select a dialogue option during a conversation with a mouse, on the PC version of the game? I have tried ten times to ask this guy about his shop's name, and keep getting kicked to his merchant's inventory. At this point, I don't even see why options are included if you can't use them.

You can use the directional keys to highlight, then confirm by right-clicking.

http://www.nexusmods.com/skyrim/mods/18466/?. It has helped me immensely in avoiding the very issue you seem to be having. I know there's at least one more that does something very similar to the one I linked to, If I find it, I'll post...unless someone else does first.

http://www.nexusmods.com/skyrim/mods/27371/?. One of the essential un-half-assing mods.

Also check out http://www.nexusmods.com/skyrim/mods/28170/?, and "yes i'm sure! Quit nagging to me!" mods: http://www.nexusmods.com/skyrim/mods/33916/? (i have another one by him too, but apparently it's not on Nexus ).

As do I. It really helps a lot.

Hugs to ALL of you!