Just installed SW2005 SP0 on my Dell P3, with .5 gig of ram, Nvidea Quadra card machine.......SW2003 worked just fine, as does SW2005, HOWEVER, and this is driving me nuts, the middle wheel is very flukey....when I use it to either pan, zoom, or rotate views it gets that wierd looking split arrow symbol and starts scrolling across the screen. This drives me nuts in all of microsofts products, so I don't use the function, but for SW I have become a slave to this usually reliable function. Any ideas? I use a optical mouse, I reloaded the drivers! Thanks, Brad