After system recovery I lost my wireless access

i did a system recovery with the cd that came with my Vostro 1000. Everything looked ok until I tried to access my wireless internet connection. It is like the wireless is turned off, however there is not a switch on this computer.

Try pushing the function (key with Fn in blue letters) and i think the F2 key. Look at the blue symbols on the keys and one of them should look like a wireless symbol.