I recommend TuneUp Utility to anyone with a slow computer. Whats great about this program is the 1-click feature. You click it and it solves all the problems at once! Much easier to use than most PC Tune-Ups!

Features

Maintain system
Keep your PC in top shape: With only one click, you maintain your computer and provide more stability.

Increase performance
Get the maximum from your PC and experience top speed for your work and games.

Fix problems
As easy as pie: Solve Windows problems quickly, easily, and reliably or restore deleted files.

Customize Windows
Give your Windows a new look: cool new boot screens, icons, and animations ? free for downloading.

Turbo Mode
Disable unneeded processes and concentrate all the PC processing power on your active program!

Live Optimization
Accelerate the startup and response times of your programs ? for optimal PC performance!

http://www.tune-up.com

Its not a free software but if you know how.. you can get it free!



Edited at 04:11 Mon 2/11/09 (GMT)

Hmm... I'm skeptical of these programs due to their uncanny ability to download itself onto my computer and claim I have about 3 billion viruses that only they can fix

While I'm sure this one is safe, I would always take it to your local PC expert who could do something to help

Well, each to their own and all that, but I live by the simple philosophy that there is no way running an additional program can make any system faster.

Keeping everything lean and up to date is the key for me.

Not to mention that any software which includes custom boot screens and animations etc as "tune up's" is odd from the start, since turning off all themes and animations is step number one in any real tune up process!

It's like painting a car a different color to make it faster