hardrive

Have you followed any of these instrucitons?

Description of the Disk Cleanup Tool in Windows XP

http://support.microsoft.com/kb/310312

you delete MANY files, does not mean that those files are actually taking up significant space. Also, you might want to check your recycle bin. They might still be there.

Also, what are the specs on your drive?
What is the size? How much space is used?

Sometimes the graphs look deceiving. It might show 10% free and look bad, even though that 10% is 30 GB which is not exactly low.

I usually remove files manually and get better results than Disk Cleanup.
You can look in the following folders and delete EVERYTHING:
c:\temp
c:\windows\temp
c:\docs & sett\(each user)\local settings\temp
c:\docs & sett\(each user)\local settings\temporary internet files

You can also change the threshold of temporary internet files by going to:
control panel->Internet settings-General tab
You want to look for something like "Temporary file storage". (sorry I am not at my windows pc now). I usually set that to 200MB.

Not the number. Text Files are generally speaking small Files but Video Files are large and can use as much space per second as text files like used in the Building of an Encyclopedia.

Use applications like Crap Cleaner to delete the Temp Files in the Temp Folders

http://www.mrbass.org/freeware/crapcleaner/

Advanced Windows Care also seems to work quite well

http://www.download.com/Advanced-WindowsCare-Personal/3000-2086_4-10407614.html

Then start looking at what else you don't need.

Col