Zooming and Scrolling

[Deastman]

I am constantly losing the ability to zoom with the mouse wheel. It reverts to scrolling up and down. If I go to the aerial view and zoom in and out a few times I can then zoom on the plan again. I can always zoom in the aerial view. Has any one else had a problem with this or is it my system. I also have trouble with jerky mouse movement and have tried different mice, updated the driver and still have the same problem. I heard about removing all mouse files in the registry but I am hesitant to try this.

Any help would be appreciated.

Thanks

xp home, wireless intellimouse explorer, 4.10.851.0 driver off web site