LinuxQuestions.org - Horizontal scrolling and other buttons on Microsoft Laser Mouse 6000

I've just bought myself the Microsoft wireless desktop set 6000, which includes the wireless laser mouse 6000.

I've managed to get the back and forward buttons (6 & 7) working correctly by configuring the number of buttons to 7 in /etc/X11/xorg.conf, changing the ZAxisMapping and using xmodmap. However, I've come across something interesting:

When I use xmodmap, it suggests that there are 11 buttons:

Code:

[david@fc5test ~]$ xmodmap -e "pointer = 1 2 3 6 7 4 5"

xmodmap:  commandline:1:  bad number of buttons, must have 11 instead of 7

xmodmap:  1 error encountered, aborting.

Now I know that this Mouse can do horizontal scrolling, as it will do it in Windows. So, I have two questions:

1. How can I get Linux to recognise all 11 buttons? Even if I configure Buttons = 7 in /etc/X11/xorg.conf, xev still only recognised 1 (left), 2 (wheel click), 3 (right), 4 (wheel up), 5 (wheel down), 8 (back) & 9 (forward).

2. How can I use horizontal scrolling? Is it supported natively by Gnome? Or is it application-specific? If the latter, which applications support it?

Regards
David