I sell new complete power window regulators with new Bosch motors for $120
per side.  However your problem could be the switch ($35 from me) or you
could have broken wires in the rubber boot that goes from the driver's side
door to the body.  Sometimes the wires get pinched in the door and this
causes all kinds of wierd power window activity.  The only way to check it is
to cut the boot open and check the wires (you can test for continuity but
sometimes they can have continuity because most of the strands are broken
except for one or two, yet there isn't enough wire left to carry the current
to the motor).  BTDT.  Hope this helps you.

Thanks,
Ken Wilford
http://www.vanagain.com
John 3:16
Phone: (856)-765-1583
Shop:   (856)-327-0027
Fax:     (856)-327-2242