Window not staying down

[97 Boxster]

OK, so i have searched here (probably not too good but I have) and I am sure this has been discussed by many. Here is what is happening:

-With the top up and windows shut I open my door from in or out of the car and the drivers window goes down like it should but then is shifts back up rapidly. It does not stay down so I have to press the switch to lower the window a bit then close the door then switch the window into the UP position.

Any help would be great. I am guessing its just a switch somewhere. I am hoping its a DIY. Thanks

[MN 986]

I had this problem and found a thread titled 'Door window drops but immediately jumps back up'. Search for it.
It identifies the problem as a microswitch inside the door lock assembly. I don't think you can get the switch by itself, so I tried lubricating it as recommended (no luck) and then replaced the door lock assembly. It was a DIY for me.
The part is called the 'Door Lock Mechanism', and is available at:

http://www.pelicanparts.com/cgi-bin/ksearch/PEL_search.cgi?command=show_part_page&please_wait=N&make=POR&model=986M&section=INTpnl&page=1&bookmark=7&part_number=8N1-837-015-C-M100

You will need a special type of wrench called '12 point triple square' to remove the part from your door, but I found a set at the local O'Reilly Auto for not much $. It is used to remove the 2 bolts visible on the door jamb part of the door.

Good luck with the repair!