Make the timeline panel active (yellow box around it), zoom in a bit so the timeline is longer than the window. Then try the scroll wheel. It should move the timeline. Similarly, with the mouse pointer in the panel next to one on the sequence names, using the scroll wheel will move thru the sequences.
Report back if that does not work.
Thanks for your reply.
Ok I've tried out your suggestions and the scrollwheel still has no effect. This a Microsoft Wireless Mouse 1000 and appears as Microsoft Hardware USB Mouse in the device manager, driver provider Microsoft.
I just also tried out another wireless mouse a Logitech M215 which appears as USB Input Device in the device manager and scroll wheel works perfectly well in Premier Pro. I was able to scroll the sequence left and right and scroll any panels that had vertical scroll bars.
It's very odd that such a well known mouse don't work, I'll try and see if there is a driver update for the mouse, but last time I looked there wasn't one. I really would like to have the Microsoft Mouse on my CS5.5 system if I can. Any other ideas would be more than welcome?
I tried updating the basic driver but I am already running the latest version.
I downloaded and installed the Microsoft Intellipoint software which uses a different driver and offers more configuration on the mouse options and guess what it now works.
Problem now resolved.
Thanks for your help.