Window

I bought my car, a 98 grand prix gt, a few months ago and when i got it the passenger window worked fine, nice and strong. Then one day i got it in and it just didnt work at all. Just curious if theres anything i can check, i'm sure it could be a number of things. If the motor went out i prob. won't fix it but i would appreciate it if you would give me a few other things that could be wrong w/ it. Thanks