the patch is very simple:
1. run the install file
2. after the welcome screen, kill the process with task manager (rsetup.exe)
3. go to windows/temp folder and extract the patch
4. run the patch (it will modify irsetup.dat)
5. execute rsetup.exe
6. use this serial (without quotes): "00-cracked-by-stillerbaum-00"
7. enjoy and discover you can get the same results modifing the registry yourself if you Googled it.