Try the following :
there is a solution
if not :
Download install and update Ccleaner
After installing and updating go to options - advanced and tick prompt for registry back ups
Now Start up in safe mode
Do two runs
1) Click on problems and tick all. Click on analyse. At the end you will be prompted for storing a backup.
This will be stored, as a default, in My documents.
2) Click on cleaner click on analyse and accept all files to be removed.
Have you checked the folder's Properties?
Right click the folder, and select Properties.
Make sure it's not set to Read-only.
If it is, uncheck it, click Apply, and click OK.
Now try to delete it.
If none of the above works, here are a couple of programs, you can try:EraserUnlockerDelete DEoctor
There's also this Microsoft Knowledge Base Article that might be helpful:How To Take Ownership of a File or Folder in Windows XP