I want to play my old Video Games using computer. I.E. I want to use my old cartridges please tell me how I can do that.
there isnt a way that I know of, but you can download emulators!
emulators can be downloaded from certain places, I suggest you do a search for the emulator you want, then find some where to download the roms.
Aren’t search engines great?
I dont know if ther’s any way to play N64 games from the cartrige on the PC…but you can download the games, and the emulators you need to play them at: www.megagames.com (clean), or www.astalavista.com (warez…)…there are many other sites…search engine…
Try This Link it will point you to the right sites and places to download the games from.
if you need more help, let us know 
Best NES emulator: NESticle.:blah:
And, no, I’m not making this up.
The best SNES one I have had in the past is ZsneS!!!