McAfee Shredder is a computer management tool that can improve the speed and performance of your computer , It securely erases the data you specify for deletion. Even if you use recovery software, no trace of the erased data will be found. Can you specify the location your referring about, and attach an image of the same if possible ??
note: Moving thread to Quick clean 9 - 2009
The Basic and other options in shredder tells about the algorithm which will be used to delete the file... The file will be shredded one time or multiple times. More the number of times that a file will be shredded it will be that difficult for recovery software to recover back...
I hope this helps.