I have noticed that some bioses have a setting that can turn the wifi card on and off, can you check to see if yours does?
http://eu.computers.toshiba-europe.com/cgi-bin/To...18&selShortMod=358
There is a a link to your model and it's current drivers. Perhaps try both the wireless drivers listed there and see if you have any luck...
The other thing we can do to check to see if it is a hardware issue is, run ubuntu live and see if it recognizes that there is a wireless card there. If it does, then we know that it's an OS related issue.
/ 
