I think I've figured out why my computer is so laggy now that it's been fixed. Previously, I had a 128MB Video card, and now I got a 256MB Video card. Since I have so little RAM compared to my Video card, 384MB RAM, my Video Card is eating up my system memory. I'm thinking of going out to CompUSA later in the week and buy me a 512MB card and ditch the 128MB card I have, to have a total of 512+256MB of RAM.
Problem is that I don't think that my desktop's motherboard can go so high, the PC was manufactured in 2001, most of it's components have been upgraded extensively except it's proccesor.