Grab ISboxer. The windows layout wizard will have your windows the way you want them in a matter of minutes. Get the free trial see if you like it.

My computer isn't a powerhouse either and I run a team of 5 just fine. Only have 1 duo core processor 2.6mhz each, 6 gigs of memory, and 1 gig video card.

You need some more memory flat out. You can grab 6 gigs for like 45$ from Frye's, Newegg, many places. Memory is cheap these days...