You make it sound simple, but the case just wasn't coming off. I'm usually very good at taking things apart, but this thing has beaten me so far. I did have all those screws off, but the top was not coming free from the front panel, no matter how hard I tried. I don't know if it matters, but this is a rebadged Dell unit recently purchased at Tigerdirect. Thanks though, I guess I'll try again.

Stu