Well.. weird. Don't bother calling in on support, Eidos won't help anyone anymore. So, you might want to try cleaning that registry of yours. Either use a tool that scans it for dead entries (there's a good freeware thread
here in this forum where you can find some cleaner tools) or do it yourself by using the registry tool. Now follows a quick guide.
Start - Run - type 'regedit' (enter)
Use the search function and search for related words like names of the companies that made that emulation software and of course the names of the programs. Delete keys (and, whenever you can be sure of it, entire folders) only when you're 100% certain they have something to do with the emulation software.
Backup the entire registry before you do something. This is
important. I've done this often enough to know when something can or shouldn't be touched. If you're not really sure if something should be deleted, leave it alone. Only remove it when it's really obviously related, like when you find a Dosbox key at \HKEY_LOCAL_MACHINE\SOFTWARE\DOSBOX. You get the idea. As long as you really did remove that program from your computer, there's no harm in removing it from your registry as well.
But for the love of god, backup your registry.