There is a really annoying creak coming from the passenger window/door of our 96' Cabriolet, especially apparant on bumpy roads (most of them really!)

Just wondered really how easy it is to get the door panel off so I could have a look at it, and basically how to do it as I can't see many screws on the door panel that look like they are holding the thing on. Any past experience would be greatly appreciated. Possibly a bit of WD40 may do the trick? Who knows?!

Cheers