BMW: BMW Z3, import car magazines, dollar computer

Question
Hi Kenneth,
I have a BMW 1998 Z3 Roadster.
I was wondering how and where to re-set the oil red lights on the dash to green once I've changed the oil myself. Do I need a special tool to re-set this?
Can you help me?
Also, is it possible to purchase anything to unzip my plastic window to remove it while my roof is down.
Any ideas will be appreciated.
Thanks in advance.

Answer
There is a tool, usually for sale in the rear of import car magazines. The back window is meant to be installed only one time, and i have not heard of any kits to do otherwise with it. There is a way to reset the lights without the tool but you risk destroying a thousand dollar computer when you can buy a hundred dollar tool and do it correctly.