Just wanted to pass on a great site for testing your RAM for errors:
http://oca.microsoft.com/en/windiag.asp
I wish I knew about the site when I was having memory problems, but better late than never!
I also found some great links for understanding spyware
http://www.bleepingcomputer.com/foru...howtutorial=41
And using ad-adware
http://www.bleepingcomputer.com/foru...howtutorial=48
And Spybot S & D
http://www.bleepingcomputer.com/foru...owtutorial=43&
This is also an excellent link on how to use HijackThis
http://www.bleepingcomputer.com/foru...howtutorial=42
I found most of these links at
www.bleempingcomputer.com