I wouldn't if i were you. The problem with compressing an entire drive is that Windows has to decompress and recompress EVERY file as it is accessed. This includes system files. In otherwords, it will slow your computer down considerably and the space gains will not be worth the performance losses. Unless it's used for just storage that isn't accessed all the time, then it's OK.
I use Microsoft Visual Basic 2005. (Therefore, most code samples I provide will be based around the .NET Framework v2.0, unless otherwise specified)
The problem with compressing an entire drive is that Windows has to decompress and recompress EVERY file as it is accessed.
Thanks for the heads up ideas man. Yeah i just read that somewhere. Wouldn't be worth the performance hit. I wasn't planning on doing it anyway. I should have more than enough hd space. I also read that NTFS compression does a good job at compressing image files but some files like .pdf it dosen't.