Yup, time for a new window motor

. Autozone has 'em for under $50 with a lifetime warranty. Helped my buddy swap his out last week. Took less than an hour to do it after we got all the parts that we needed. The big thing was getting backup plates for the rivets that hold the motor/regulator assembly to the door panel. Because without them, the rivet wouldn't expand large enough to hold it on place-the rivet would just pull through the door. Another person makes attaching the new assembly SO much easier because you have to hold the motor/regulator in place, work the pop rivet gun and hold the back up plate against the side of the rivet that is *inside* the door. Very hard to do unless you have three hands... BTW, be prepared to get cut at least once during this operation as the sheet metal is VERY sharp in places in the door and on the regulator itself.
Had to get some new trim panel clips too as a few of the old ones busted pulling the trim panel off. Autozone had those in the "help" section as well. Be sure to get the big pack. It should go without saying but, you don't have a trim panel tool GET one (about $5). It looks kinda like a bent flat head screwdriver that has a "fork" on the end. The "fork" allows you to slide the trim panel clip in between it to pull if from the door panel without breaking it. This it to keep from breaking the *trim panel* itself rather than the clips that hold it to the door panel. Even with this tool, some of the clips will break as they are old and brittle.
Ed O. has a nice write up on how to do it here:
http://www.tyclone.com/windowmotor/index.htm Drilling a hole in the regulator assembly isn't really necessary but you MUST secure the regulator arm somehow before you remove the old window motor. Once you feel how heavy the window is and see how big the spring is that moves the window up, you'll understand why

. My bud and I used three large cable ties to secure his rather than drilling holes into it and it worked great. HTH's