[wubi] Inspiron 1525 problems

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http://ubuntuforums.org – Hello everybody. Ok, I've been out for some time, and now I'm back, and with new problems. I just installed 12.04 as Wubi in a Dell inspiron 1525, with W7, and, as usual, I have no wireless connection. How do I get the wireless to start working? Besides that, how can I get rid of Unity, and go to the traditional mode? Thanks in advance for your help. :) (Hardware)