ROOTSYS: Base directory of the root installation (e.g. "c:\root").
QTDIR: C:\Qt\4.6.3
QWTDIR: C:\qwt-5.2.1
VCDIR (Windows / VC++): C:\Program Files\Microsoft Visual Studio 9.0\VC
VS90COMNTOOLS: C:\Program Files\Microsoft Visual Studio 9.0\Common7\Tools
3) create a folder on c:
4) right click and select tortoise svn -> create repository here
5) right click and select tortoise svn -> create check out
6) paste in web link to folder on svn you want to use (either 'trunk' or 'release ??')
7) follow the commands on http://icwiki.physik.uni-bonn.de/twiki/bin/view/Systems/UsbPix using command prompt found in QT