Sysprep 'breaking' Microsoft Firewall Client 2004

Hello,

I've been having issues in regards to creating Windows XP images for WDS
deployment. We are currently using a ISA2006 server along with the Microsoft
Firewall Client 2004 client. When I sysprep an installation to prepare to
capture the image, the firewall client will not connect to the server.

I had no issues creating and bringing down an image using RIS, but we are
upgrading to WDS and I'd like to get this working without having to install
the client after the fact.

Does anyone have any ideas on what is going on here?