proccesses slowing you down?
I presume you know how to bring up task manager then.
open it up, and take a screenshot of all the proccesses under your 'username' (click the name tab til yours are all in view)
paste the screenshot into paint, don;t forget to hide anythign important, if its in view, uplaod the screenie to somewhere like photobucket.com, link it here, I'll see what you can kill off that might help
to get your specs go Start>run>dxdiag they;ll come up there on that first tab, copy and paste ^^