rabbit,
i would try turning off any anti virus software. some scripting in the new Norton Anti-Virus was messing with my extension manager.
also, try getting rid of it all together. follow the links enclosed. saiteks software is real buggy.
go to your start menu, RUN, and type "msconfig"
try shutting off some things that might be of conflict.
saitek is a good stick but the support is poor.