I did a lot of research and just now bought a new motor and regulator (you must buy both parts) on EBay for a grand total of $59.90. The few mechanics I checked with said a friend of mine who is mechanically inclined should be able to install it, but they offered to help if he gets stuck. I refuse to spend $350.00 to have the "Jeep" brand on the inside of my door. I have put so much money into this 2001 Jeep. My 1996 one never gave me a problem. Being female and not familiar with the automotive world, I can't name all of the major and small parts I've had to replace. I know I had to get a new transmission, I know my last inspection cost me over $1,200. I know my rear windshield wiper doesn't work. I know my front headlights look horrible. I know I am so disgusted with this Jeep.
I did find directions on installing the window part online (included pictures), so I'm going to have my friend give it a try. I will admit I do enjoy driving it, as I did my old Jeep, but at this point I have too much money invested, sunk, into it to even trade it or sell it. Oh, how I wish I had my old one back. Live and learn. This thing isn't worth half the price I paid for it!
Good luck with yours and let me know how you make out. Thanks!