[cephelotron]

Ok, I've got kind of a weird situation. I have an Acer Aspire 7720 with Vista pre-installed that I'm wanting to dual boot with xp. I tried using the shrink/expand option under disk management in order to create the new partition, unfortunately, the machine crashed while it was processing the shrink command. I re-booted and now when I check the volume size under disk management, the primary drive shows the full, pre-shrink command size, but when I check the volume's size in explorer, it shows the post-shrink size.
So I've basically got half of my drive that is not being recognized by the OS. I'm guessing that I need to repair the MBR, but I don't have either the install or recovery disk in order to run windows RE. Any advice?