Step #1
Download izaram's dat maker from my website.
Add add the paths to your pc games.
Set the extension to "exe", the Description to "PC Games", the Emulator Name to "PC" and the filename "PC.dat"
When it's finished copy it to the list generator/dats folder...
Step #2
In the cfgs folder copy the template.cfg and rename it to "PC.cfg" Leave the emulator exe and path blank and set the extension to ".exe" Turn on send rom path and turn off send exit keys. Ignore all other settings.
Step #3
Open up the dirs.ini in root folder and add all of the paths to your pc games in the roms entry, with a ";" dividing each entry. For example:
roms=g:\roms\mame\;e:\halo\;e:\doom3\
Optionally you can do the same thing for the aw directories.
Step #4
Below that in the startvd section add a virtual path that looks like this:
[path]
logo=
caption=PC Games
useclones=0
searchstrings:5=PC
filters:
[/path]
Step #5
Fire up dk and select "Generate Gamelist" in the cfg menu. Go to the bathroom or something and when you come back your pc games should show up in a list by themselves.
Btw since you are a super newb and this particular setup is a little tricky I held your hand a little. The true answer is to read the online docs, particularly the adding to the masterlist and adding emus section.
Btw the naming of the stuff I used isn't rigid or anything, it's just the names of related files have to match so I just gave you some to avoid confusion.
If the games don't launch properly let me know, I haven't tested pc support in sometime and it may be broken. It's easily fixed though. The games WILL at least show up though if you follow the instructions I gave you.
Hope that helps,
HAC