To get rid of unwanted web pages:
My Computer>DSERV (D:)>Right Click on page>Delete.
If you have any unwanted files etc. in OS (C:) you can clear them from this drive first,as this will help to speed things up,just be careful what you select - if in doubt leave it out....
You can then right click on any .mp3/Mpg files etc. and select delete to bin them,and don't forget to delete them all from the Recycle Bin.