Hi. I noticed that my 40GB drive had only 11 GB free. Well, that was odd seeing as I don't have much installed. I went snooping around and saw that WINDOWS was 15 GB!! I went in and all the folders were like 2.1 GB. So I unhid system files and found CSC to be 13 GB!!! What is this and can I get rid of it? All those files are 1/2 of the space used!!