Need some help....What is the best program to speed up slow computers?

Speed up as in HOW?

There are thing like CCleaner that will clean the junk files and clean the registry.

Plus you can use Startup CPL to remove all the extra staurtup items.

And there is always the good old add\remove menu and uninstalling everything you don't use or recognize.

Then run CCLeaner again.

Theres really so much you can do for old systems. A good start is a fresh install using nlite or xplite.

Well, you can also try System Restore Software to keep your system clean & safe, such as ProMagic, PowerShadow.

Edited January 27, 200818 yr by lqs_lfzz

If the computer "is" slow (as in "because it's an old one), buy some RAM if applicable.

If it's "slower than before", reinstall is often the easiest solution.

If it's "slower than it should be and has always been", there is no easy solution. Kelsenellenelvian's post is a good start indeed.

Clean up your machine: temporary files, bad registry entries, uninstall unused applications, et cetera. Disable all visual effects: no effects, no fancy background, no fancy screensaver, no expanding menu's, et cetera. Configure your machine: disable all unnecessary services, disable all unnecessary start up items, remove all unnecessary tray icons and desktop icons, et cetera. Update your machine: install all required updates, scan your machine for adware and virusses, et cetera. This should give you a good start.