Brian Eslick from How to Automotive http://www.howtoautomotive.com/ takes you step-by-step through the process of replacing the rear window regulators on a 2003-2010 BMW X3 E83 models. Links for parts are below.
How to Replace the Rear Window Regulator on a 2003-2009 Toyota Prius
Brian Eslick from How to Automotive http://www.howtoautomotive.com/ takes you step-by-step through the process of replacing the rear window regulator on a 2003-2009 Toyota Prius. The process is the same for both rear window regulators. Brian will show you how to remove the door panel and window regulator and reinstall them.
How to Replace a Rear Window Regulator on a BMW 325 E46
Brian Eslick from How to Automotive takes you step-by-step through the process of replacing a rear window regulator on a BMW E46. All done with hand tools. Estimated repair time 1.00 hour. Overall a very easy job for a DIY project.