You have to remove it. There are about 6 nuts holding it on.

Tape window in the up position. (you might have to move it slightly up or down to be able to reach things.
remove the door panel (instructions somewhere on this site)
Gently remove the power connector from the window motor
Remove window from regulator track.
then remove the nuts holding the regulator on
remove the regulator
remove motor from old regulator and put it on new regulator (dont strip the screws)
then reverse the process.



These steps might not be in exactly the right order, but I am confident you will figure it out. Its pretty straight forward if you take your time.