Have you been able to go online under XP?
I would be interested to know, as I understand it, the problem with PCIS on XP is that XP ridgidly controls access to the COM port, so they are not going to get along too well when trying to go online.
I have one SLC100 left in the plant - It runs an environmental alarm panel in a pump room - and I doubt that anyone has gone online with it since it was comissioned about 18 years ago. Sooner or later though someone is going to probably have to go online. If desperation sets in, I do have the handheld programmer.%Connection: close3C/P>