Yeah, thats the same version of Kies that I am using right now. 2.0 (or whatever..) didn't work at all...
On this computer I am using Windows XP SP2. When I am home I will try on my Windows Vista, 64bit machine. Unfortunately both computers I have at home are Vista 64bit.
EDIT: The error I get is "No Response from server."
This error pops up immediately as I start the upgrade, after it prompts me to backup my contacts.
That is weird. The only difference is that I have XP SP3 and I made sure that I installed .NET Framework 4 (someone had posted somewhere else in this forum that it made a big difference).