Lots of people are talking about their mouse...

My mouse is really cheap: it's only got the left/right click, scrolly, a center button that by default adjust the mouse's sensitivity, and forward/back internet browing buttons. I wish there was a way to set those forward/back buttons to ctrl/alt, so that alternate hotbars were only a thumb+button away...Does anyone know if that's possible?

I think it's called a blackweb grim? I could be wrong. >.<