I have an old PII 300 computer from '99. I am wondering how hard it will be to put in a new motherboard with a p4 chip maybe around 2 gighertz, give or take, and how much it will cost. Also, is it feasible to upgrade the sound and video cards with a new motherboard to get a decent gaming computer. (Both aren't integrated). I would like to spend less than if I was buying a new computer. Thanx for the help.