Getting rid of unwanted files

[Tweefo]

How do you find (don't know the names) and delete unwanted files. Want to install a program but it can't. (Older version of program found). Uninstalled that one but some files remain. Win XP

[JJ 3000]

Did you use Add/Remove Programs to delete that program?
What program is it?

At your desktop press F3. That will open up the search companion. Type in the name of the program and search for files with that name. Delete them.

You might try this program to get rid of all of the junk on your computer
http://www.ccleaner.com/

[billrich]

Go to the support site of the manufacturer ( creator )  of the program.  The problem usually has occurred before and they will have an uninstall program.

Sometimes we can reinstall the rogue program and then the OS add/remove program will work. Or there will be an uninstall under the start menu.

Run all of your cleanup programs. Start, all programs, accessories, system tools and then click Disk Cleanup.

A rogue entry in the registry might be the block.   Use the free Microsoft registry cleaner: 
http://onecare.live.com/site/en-us/center/cleanup.htm

Search for a key phrase in all files for the associated rogue program files and then delete. ( be careful not to delete good files. )

Search for *.tmp  and then delete.

Search  for *.log and decide which ones to delete.

Make sure 15 to 20%  if your HD is free

http://support.microsoft.com/kb/290301

http://ask-leo.com/can_i_delete_old_versions_of_software.html

[Broni]

What program is it?