G'Day Niko
I've also bought one.
Load the drivers that came with it and just use the USB2.0WebCamera software that came with the camera to capture your target to an AVI file.
Download Registax4
http://www.astronomie.be/registax/installregistax41.exe to process the AVI to create a single stacked image. Just choose "automatic" processing to get a feel for what it's going to do. There are plenty of threads available here to discuss the use of Registax here on the forum.
Cheers
Chris