Alright, I now have Paragon Partition Manager Professional (which works on Vista). I have the option to Move/Resize my C:/ partition. If I change the 298GB (of which 215.7 GB are used) to be 235.7, it leaves me with about 63 GB of unallocated space. Is this smart to do or is there a good chance that I could mess up all the data I'm trying to keep? With the unallocated space I would like to install a copy of XP for strictly gaming use.
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I forgot to mention that I have Acronis Disk Director 10 as well that has the Boot Manager montag451 was talking about.