Changing mouse button functions.

[RandomExtrusion]

I'm wondering how to change mouse button functions... specifically; In windows I like to move my middle button (mouse wheel) click to the forward/back button (on the thumb)... it's better ergonomics for me and keeps my middle finger from getting sore when doing activities like Blender. I.E. How do I get the middle click to the "red" button http://www.microsoft.com/hardware/mouseandkeyboard/ProductDetails.aspx?pid=041?

Thanks

EDIT: ** P.S. I'm using Gnome.

[RandomExtrusion]

Figured it out.

[MajinJoko]

or you can set this in xorg file, using the command in bold

[RandomExtrusion]

Nice, I like that better, thanks!