Bleh. Mine is 3.08 GB. Delete or move around the stuff you store in my documents and desktop. Clear your temp using CCleaner or by yourself (C:\documents and settings\username\local settings\temp\) And compact your registry with http://www.registry-clean.net/free-registry-defrag.htm
__________________
If the Start Windows Restart when Windows starts check box is checked Windows Restart will start automatically every time Windows is started. - Actual excerpt from a windows program help file
In addition to the other suggestions, relocate My Documents to another non-OS partition. This will also make it unnecessary to back up your documents the next time you do a fresh installation.