I just bought 2 gigs of RAM for $20
To put that in perspective, about two year ago that would have cost me $300 or so. Why so cheap? Microsoft screwed the RAM makers. Apparently they all expected everyone to upgrade their RAM with Vista and overproduced. Vista bombed. Now there’s a ton of cheap RAM out there.
Head to http://www.crucial.com and run their system scanner to see if you could use an upgrade. Short of installing a whole new processor, increasing your RAM is the quickest and easiest way to dramatically improve your system’s speed.