Cant play nintendo games

OK. First of all to play NDS roms on the computer is almost not possible. The emulator for NDS are not very good and have really bad framerates so i would abandon the idea of playing them on your pc. If you still want to try then go to http://www.emulator-zone.com/ download the emulator ou want. Check that your roms are all unzipped before you try to run them and have the right file ending. snes=.srm or smc nds=.nds nes= .nes hope this helps.

First of all, make sure you own all the roms you have, otherwise
you are doing something illegal.

Download No$GBA at
http://nocash.emubase.de/gba.htm

Use this to open your roms.
You can set controls in the options panel.