Try this link, it may have some software on it. http://webferret.search.com/click?wf,praxis+update,,www.precon.com%2Fservice%2Fpraxis%2Fpraxis_update_von_praxis_zum_praxis.htm,,altavista
If not then download yourself a copy of Web Ferret and search for Praxis Update or similar, it will come up with loads of links. You can then use one of the many translator sites to make it understandable.
Rolf