ok, these 2 links from my collection should find you anything you want (not roms though)

For a list of homepages for almost every computer/handheld/console (click this) (note this page has one pop-up)

For access to zophars domain the most comprehensive collection of emulators on the net (click this) (note this page can take a while to load)

I hope this helps everyone find what they want.

ABCMan