Can only run 1 program!:/

[night12]

Basically whenever I run any game that is constantly logged onto the internet, it will not let me run anything else on the side. I have Spyware Doctor, but the problem might be that I have rebooted the whole computer too many times (as in back from scratch) Sorry I don't know computer lingo very well, but if anyone could help me it would be greatly appreciated.  Also I just recently noticed that on the Task Manager the CPU Usage is just about always 100% when i start these programs.

[Squeezebox]

There are some memory tweaks you could try:

http://www.techspot.com/tweaks/memory-winxp/

(Set Virtual Memory to Windows managed.)

There's also a more advanced memory tweak:

http://www.fixmyxp.com/content/view/97/40/v

And you might like to look at what programs are launching at startup

http://www.fixmyxp.com/content/view/142/40/