sorry to bum you out but one of the falls of linux is hardware. Some makers of hardware of just panseys and wont release the software that makes things work. Others that do are slow about it ( ah well at least their doing something ). I read on the link above that the driver was included in a 2.5 kernel ( anything ending in an odd number; 1,3,5,7,9 means its testing, beta, etc ). Of course thats now the 2.6 kernel so I imagine that if you could get working under the 2.6 kernel it would simply work. You are most likely using a 2.4x kernel if you have mandrake 10 ( the only other think you COULD be using is a 2.6 but i doubt it ). Bascially the link above goes into quite a few details that you might not want to mess with.
So either someone who actually knows something about mandrake could help you change your kernel ( im sure theres some easy way right? )
Or you can buy a new modem ( speedtouch, dsl or cable? i dunno ) that works out of the box in linux but you will have to make sure that it will work with your ISP as well.
Or follow the instructions above
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