Have just had second hard drive installed on Xp computer with Win7 on it, so duall boot woth XP hard drive still in there. Oblivion installed just fine on Win7 by installing to different directory, also installed SI.

When playing Oblivion and in the various inventories, the middle scroll button does not work by just scrolling the button up and down. I have to actually point and grab the top of scroll bar and move that down and up. This is making the Potion inventory really hard work and as all of my characters make poisons and restoration stuff, not forgetting the different Shield potions. It's particularly bad for my Atronach birthsign character.
The middle scroll button is fully working outside of the game. The mouse is an MS USB Comfort optical 3000, I also see it called Intellipoint. I've been into the config' of mouse, it looks fairly normal. I've also rolled back the driver without any difference.

Has anybody else had this problem? Can anyone Help? Please? Meanwhile, same mouse is perfectly happy working in OB in XP.