Where is the file?
dc##.(ext) so happens to be some sort of naming schema for the recycle bin located in C:\Recycler\account-sid(bunch of numbers). In that case just clear your recycle bin.
Directory of C:\RECYCLER\mysid
12/13/2005 13:54 2,705 Dc100.zip
12/13/2005 15:26 466,696 Dc101.exe
12/13/2005 11:50 Dc97
12/13/2005 12:38 39,776 Dc98.JPG
12/13/2005 12:55 491,768 Dc99.exe
4 File(s) 1,000,945 bytes
1 Dir(s) 14,541,971,456 bytes free