help me setup mobile VJ for clubs

[JC1520]

i would like to add to my DJ Unit a Pc base VJ setup for mobile use i have just bought a 19 inch server case to built my PC into what is the best recomend PC to put in and Video card is highly recomended. i am going to use a projector and a large TV Sceens most all software what is recomend for me to go and buy. i want to be able to play the music video straight from music DVDS Avi s and more onto a screen i am a alround DJ from dance music to Karoke and now videos as well before i used DVd S but i want and need to move to PC base in easier and better Shows please help in my new roll