Size of drive wrong - can't resize

Hello there,

I am running Parallels 4 on Mac OSX Snow Leopard, with WinXP as my virtual environment OS.

Today I went to install a new program on my Parallels machine and it said there wasn't enough room. I ran a disk defrag and it said I had less than 7% room left on my drive, which surprised me. So after poking around, I saw that it thought I only had a 7gig hard drive. I followed the tutorials which say to use the Parallels Image Tool, and in that program, it says I have 14gigs allotted. I double checked, and sure enough my virtual machine (.pvm file) is 14gigs. But nothing I do will make the Windows machine see the extra space.

As some tutorials suggested, I went into my Disk Management, where they assume I will find unallocated space which can be partitioned into my existing C drive. But the manager doesn't show any unallocated space. So where did the additional 7 gigs go?

I have no other drives partitioned, just one C drive. So where is my space?