64 Studio 2,1 and 3 beta 3 & ethernet card

Hello I was ready to install 64 studio to look it and have decide for stable 2.1 . During installation , the system installer haven't found any ethernet card so I repeat this phase another time , but with non positive result. At this point I'm tryin to install 64 studio 3. alpha 3 and installation has finished without problem infact now I'm writing with this in firefox. Has someone the same roblem. ? I want to try this version and for me if it's usable it's enogh for evaluate I'm able to used it. bye