Got it to work!!! It wasn´t a driver problem. It seems that during the installation of win8 the touchpad got disabled in bios. Problem: there is no Point in the bios to aktivate / deaktivate the touchpad. As nothing worked and i nearly wanted to reinstall win7 I got an strange Idea: reinstall the bios from A12 to A12 and guess what! Tocuhpad works now perfektly with ALPS-Driver found here in Forum. bad ass. 
Since my Update from Win 7 64bit to Win8 the touchpad didn´t work. Tested the alps and synaptics Driver. But both dind´t work. Need Help! (Hardware ID is named as ACPI\PNP0F13\\4&1923AA7D&0) THX Simon
XPS M1530 Touchpad won´t work Win8