Thank you all, with your tip I finally found it out !
There was service: Rockwell Event Server: sheet Log On: Profile 1 was Disabled for unknown reason. (Control Panel -> Adminstrative tools -> Services { 2 gearwheel )
I enabled it (profile 1) before uninstall: (uninstall removes that EventServer.exe-file, but obviously it's properties stay to some registry)
Uninstall order:
1. RRView Studio
2. RSLinx Enterprice
3. Factory Talk
4. Re-boot computer
Then re-installation order:
1. Factory Talk 1.08, Re-boot computer
2. RSView Studio and Yes for Re-booting who takes a while...
3. RSLinx Enterprice, Re-boot computer
Re-member that I have w2k pro OS, not XP !
And finally, it works, thank you again for your tips !
br. Seppo