Hello there. I recently bought a Hama m1130 mouse and I had the same problem. Luckily I found the solution. In case you couldn't resolve this here is the way to do it.
you go to
http://www.hama.de/service/download/drivers/mice and search for this driver: 00052399 / Hama Wireless Optical Mouse "M2130".
I know it's not the same model but i think their drivers are universal. This should solve your problem. Have fun.
P.S.: the version of this driver should be 6.1 not 6.0. Have fun.
