Dreamcast Emu Problem: Crashes

[ecthelionv2]

Hi there. I was wondering if you guys would help me on this problem.

I tried using Chankast, nullDC and DCemul.

DCEmul: Loads the start-up/boot screen where you enter the time and date. But controller does not work, I'm trying to get it to work with the keyboard but no dice.

nullDC: Crashes as soon as I load the game. Says the CD is an audio disk. Controller doesn't show up as well. I'm using a keyboard for now and it doesn't show as well.

Chankast: Hangs up, and won't load the game at all.

As of the moment, I'm trying to get another version of MVC2 and Sonic Adventure and whatnot.

My comp Specs:

1.86GHz Core 2 Duo
3 Gig Ram
Vista Home Premium SP2
8400x Nvidia GeForce