Ok, can anyone help with this one?

I noticed that my PC was being reeaally slow recently so I attempted to clear some space, I did all the usual stuff: deleted unused programmes, emptied the recycle bin etc but its still slow and showing just 3% space remaining!!

How can this be? Surely I can't have used all the capacity!! How do I see what's using the most space?

Anyone?

Any advice most appreciated...

I recommend purging the hard drives of clutter with Windows XP Disk Cleanup, ATF Cleaner or CCleaner. If using CCleaner, uncheck the option to install the Yahoo toolbar during installation. Before first use, go to Options > Settings > Advanced and ensure Only delete files in Windows Temp folders older than 24 hours is unchecked. Know your site credentials (user names and passwords) for sites you frequent before cleaning; you may have to login again at next visit.

If still a problem check out Piechart Disk.

Would also be nice to know how big the hard drive is.

If it's still pretty full after following Bill's instructions, install Treesize Free to see exactly what is taking up all the space. You should also show all files on your computer so you can see everything.

Open Control Panel then Folder Options and click on the View tab.
Select "Show hidden files and folders"
Uncheck "Hide extensions for known file types"
Uncheck "Hide protected operating system files (recommended)" (click Yes when prompted)
Click Apply and OK