I messed up completely... this is what happened. I was running Windows 7 and I decided to test out Linux Ubuntu so that I would know what I was talking about with the OS. The disc run was pretty bare bones so I decided to install it onto my system. Bad news is that it completely messed up Win7 somehow and I was pretty much forced to do a re-install of my Win7 installation. When I went to re-install to fix the lag errors, it says I can't install on any of my hard drives because they have been all changed to ext3 format by Linux. I have no idea how to change them back to NTFS format for Windows. So my question is, is it possible to format my hard drives back to NTFS using the command prompt that is in the Win7 install disc?