Wireless? I chucked out my wireless when it stopped receiving Radio Luxembourg.
Nah... Linux works fine on some hardware on not on others. Wi-fi worked straight away on my laptop, as did video drivers and everything else, but other people aren't so lucky. It's worth trying again with the next version of Ubuntu (Hardy Heron) which comes out next month. But... that doesn't help you run Windows software unless you run a virtual machine, and that rather defeats the object.
Which is why, with great reluctance, I'm thinking of getting an iMac when the new ones come out in June.