In my case, i had the installation in C:\Archivos de programa\QlikView and my qv work ambient into D:\QLIKVIEW,
so i just install in the new server qlikview and copy on D: my qlikview folder. Another think is the license, for that i got a folder on C:\Documents and Settings\All Users\Datos de programa\QlikTech there should be a LEF.txt that contain you license and in the subfolders are the configuration for you server, so i copy this folder on the new server and i had not problem.
I used QV10
and Windows Server 2003-2008