hello,
I searched through threads and found some similar to mine, and they were useful to understand where to start; in particular:

http://www.bimmer.info/forum/showthr...ghlight=window
http://www.bimmer.info/forum/showthr...t=window+track

e34 525tds station 1995
passenger window did a bang while going down with then only front part of the window able to go down (window inclinated).

Then I suddenly stopped and was able to have it come up again. It blocked in angle only if I went down more than half the window...

I took care thinking to work it out in some days..
but in the mean time my wife forgot and pulled it whole down...got worse...window blocked.. only way was to manually take it up and no more goes down/up.

I presume going to a mechanic could cost more than 100 euros....
I live in Italy near Milan and Pavia.
Where to get parts you refer into the threads to start the adventure?
such as plastic window sliders, plastic regulatory clips, aluminum clips (that actually attaches to the glass)
Do I need specialized screwdrivers? I merely have simple screwdrivers at the moment... (+ and - ones...)
You always speak about dealers where you get parts... is it the same in Italy? Do Italian posters have any address to refer to for these cheap parts I need?

Thanks in advance.
Gianluca