ROM Collection Library

Hi, my name is Super FZL. This is my first post on the XBMC forums. I really like using XBMC Live on my HTPC. What would make it even better, though, is if I could get ROM Collection Library to work properly. I'll explain:

After a couple of hours of figuring out general Linux weirdness, I finally managed to install emulators for NES, SNES, N64, and Genesis (by using the terminal to type sudo apt-get install >emulator name<). I also have dedicated folders in which I store the ROMs for each of these systems. However, I can't seem to get ROM Collection Library to recognize the emulators, since I don't know where their program files are actually located on the computer. I've given it my best guesses, but I'm posting here in hopes that someone can point me in the right direction.

When I set up ROM Collection Library config, this is the step-by-step process, and where I'm going wrong:

Choose a Scenario - Scrape game info and artwork online
(No problems here)

Choose a Platform - Genesis (or SNES or N64...)
(No problems here)

Path to Genesis Emulator
(I don't know this)

Emulator Params ("%ROM%" is used for your rom) - "%ROM%"
(I leave this as is.)

Path to Genesis Roms - home/ROMS/Genesis
(That's where my ROMs are located)

File Mask (Comma - Separated): e.g. *.zip - *.zip
(All my ROMs are in ZIP files, so I type "*.zip")

Genesis Artwork - same location

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Any help that any of you can provide is greatly appreciated.