I had the same problem about a week ago, in my 99SE V6 ATX. I went to turn on my defroster, and nothing, the vents opened(I know this because my windshield fogged up like crazy, thank goodness I was waiting at a red light)but the fan wouldn't work.
I checked all the fuses in the cabin fuse box, and all were good, I pulled out the one for the blower tested it(it was good) and put it back in, while I was there I made sure all the other ones were good. I then tested the blower again.... Nothing.
So I went to the one under the hood, checked all those fuses out, made sure they were all in right, they were, so I gave up. Started the car and for the heck of it, I turn on the pannel, and magic the darn thing worked.
I realize this doesn't exactly help, but maybe it'll give you some hope in that the blower motor may not be shot.