I recently went through the process of building a test SBS server at my workplace. Here is my situation:
-Installed SBS2003 on the Server. Everything went smoothly.
-Installed Premium Technologies. (SQL 2000 and ISA 2000). Everything went smoothly.
-Installed Service Pack 1 on the Server. ( I followed the instructions to the T. First, I installed the Windows Server 2003 SP1. Then, I performed the upgrades to Sharepoint, Exchange, and I ran the deployment wizard for XP SP2 for client deployment.) Finally, I installed the SBS2003-specific SP1.
After this, I tried upgrading ISA2000 to ISA2004. ISA2004 installation reports that it cannot continue because it detects the wrong OS, and that I need to be running SBS2003 w/ SP1.
The problem is, that IS what I'm running!! :)
Where have I gone wrong?? (Jeff?) :)