Although the Windows 7 Disk Defragmenter does a good job of defragmenting your disk, it does not have the gui that the Windows XP defragmenter had. With Windows XP, you could watch the defragmentation process for each section of the disk. Is there another defragmenter out there that has a similar GUI for Windows 7?

Here you go, this one works a treat: Defraggler - File and Disk Defragmentation - Free Download
Works a treat and is FREE.
While you are there grab CCleaner to help remove Windows cludge.

Bear in mind modern defraggers tend not to use the graphical display due to disc sizes.

I would suggest you opt for a fully automatic third party defragger.