FS9 Key Assigment

I have a Logitec LX700 Cordless Keyboard, I had the INav Wheel on the left assigned to the Elevator trim and it worked very well. I had to re-install XP recently and re-installed the latest Logitech drivers, now I can't get the FS9 key assignment to detect the wheel. It detects most other keys on the keyboard, the wheel works normally for scrolling in programs like MS Word - so the wheel works ok.I contacted Logitech support and predictable they blame something in FS9 as they say its working in other programs, thats whats puzzling me ?? It worked before faultlessly.Any ideas appreciatedGlen