Cannot format partition

I recently acquired a computer, and attempted to re-image the hard drive. The imaging failed, miserably, and I installed a fresh copy of Windows 7. However, the partition (D:) which I re-imaged is taking up disk space and I can't format it. How do I reformat this partition?

The image was of Windows Vista, I still get an option to boot into Windows Vista when I turn the computer on. I shrunk this partition, and I can not extend my primary partition (C:). Is it possible to fix those problems, too?

Can you boot the computer and post a screen print of Disk Management ?
Here is a tutorial by Golden:
Disk Management - Post a Screen Capture Image

This is the best I can do for an image, it's huge. The two removable disks are an SD card and a USB stick.

Yes, just do as what WHS say. Besides, you can also use "Merge Partition" feature of partition wizard to extend your c partition.
Still, I want to tell you why you cannot extend your primary partition with the unallocated space. The point is on the location of the unallocated space. If it's very behind the partition you want to extend, you can extend it in Disk Management; otherwise, the "Extend Volume" button will greyed out of usage.

Since it involves in system partition, so do it in care

My partition wizard LiveDVD won't boot (I don't have a CD handy) and I don't know if, or how, it would function from a USB. Is there any alternative? Or a method to use partition wizard from a USB?

Everything worked fine until it came to removing the Vista entry in the bootmenu. I followed the tutorial you linked me to, and it caused a... unique problem. The laptop now does nothing but emit a high pitched screaming noise when I boot it. I'm going to try repairs with the Windows 7 install disc now. Maybe I made some stupid mistake, maybe the laptop is uncooperative. Who knows?