Toshiba ISP compatibility

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Toshiba ISP compatibility

I am trying to connect to the internet using my current DSL service I have yahoo/at&t on two other computers in home..

How do I connect the internet to my Toshiba lap-top
the notebook wont let me use that ISP i have on the other computers

however, on the note book I currently have Marvell Yukon Intel(r) PRO/WIRELESS and it says wireless connection unavailable

please help tell me what to do how to set up INTERNET ON MY TOSHIBA NOTEBOOK???