Hi,
There is now a commercially supported Activation Filter available for download for users who do not want to develop/compile their own activation filter for HPC Server 2008:
http://www.hiperlogic.com/high-performance-computing/activation-filter.php
Features for this release include:
No coding is required.
A simple GUI for configuring FLEXlm licensed applications.
Server configuration testing.
Offline job testing.
Extensive logging.
Multi-Application support.
Detailed documentation.
Simple GUI installer.
There is a two week free trial for you to try it out. The step by step documentation is also on the same web page as the download.
Thanks!