Mike,
I also have purchased on March 17 a new Dell Pentium 5 with Windows XP Professional and Service Pack 2. I did have problems in loading the activation codes for RSView32 and RSLinx Gateway version. It turned out to be the Windows Firewall that comes standard with the XP Pro. I had to disable it temporarily to be able to load the codes. My versions are not the latest ones however, so it may be that Rockwell has addressed that problem in the later editions.
Lance