Hey Wolfgang,
There is a Multi Touch Test APK uploaded to the project files:
http://code.google.com/p/android-x86/downloads/detail?name=MTTest.apk&can=2&q=
I am at work currently and cant test this on my device but I will see
if this works on my Viewpad 10 tonight(or tomorrow, my list of things
to check if they work on the viewpad is getting quite long :D) if you
would like.
The Viewpad has a 2 point multi touch screen I beleive.
The Viewpad however may be an exception to the others as the standard
Viewpad comes with a copy of android x86 on it with a working touch
screen driver, which, I am guessing, is a better start point than the
other devices this project is trying to support.
What device was it that you wanted to get the Multi touch feature
working on? and do you have any software that requires multi touch
atm?