Frankly, I was shocked with the results. Overall, it ran much better on the old hardware than Windows XP ever did, and I really liked the interface overall. The only trouble I had on the install was the video driver. Luckily, techbirdy.com had the video driver I needed. I do get some strange artifacts on some of my video files, but everything else worked flawlessly.
Since it is an older box, none of the Windows 7 flashy UI stuff is turned on, but as a day-to-day workhorse it's turned out really well.