Here's the deal (I mistakenly said 320GB above... it is 400GB).
I bought the HP Pavillion rig last fall, stock 400GB hard drive. I made a recovery DVD as instructed by the HP startup guide on day one. The hard drive started dying on me a few weeks ago (lots of slow loud clicks and chugging sounds), so I used the Vista backup tool to save data on a 40GB external hard drive while in safe mode (normal mode wa completely bugged out at that point).
From safe mode, running the hard drive diagnostic program confirmed it was indeed the drive that was failing. I call HP and they agree to send me a new replacement 400 GB hard drive, same manufacturer.
The drive comes in, so I format the old drive, take it out and sent it to HP. I put in the new hard drive and then re-install Vista using the two recovery DVDs. Before adding my data from the external drive, I try to partition the new drive to be setup exactly like my old drive. I wanted 50 GB for C (mostly system files and key utility programs), then a D: and F: drive for general programs and media. The recovery drive is automatically setup by the system.
The problem has been that Vista's partition program won't let me reduce the C: drive to less than 200GB so I can allocate more space to other partitions like it allowed in my old hard drive. If there are free solutions out there (the ones above failed), I'd appreciate the help.