From the previous posts i understand that either you have to change the SystemPrefix in the windows registry or by modifying the ehshell.exe.
The first option is only possible if your windows 2003 server version isnt a VLK. Mine is not but it still doesnt work.
For the second option you need a special ehshell.res file, which i dont know where to get.
I hope some of the bright people that came up with the method is replying soon :-)