My Trust Mouse scroll wheel not working in PT8
 

Can anyone help me as I have upgraded my Pro tools 7.3 to 8 now
and my Trust scroll wheel does not work at all in PT8
which is causing me a headache for editing and mixing

It doesn't work in my Firefox web browser either
I have unistalled the Truat drivers and installed their up to date drivers
but still doesn't work in PT8!!
It is doing my head in which you fellow musicians can understand
Any advice would be great, thanks R