Need help with Wi-Fi connection on Macbook Pro!

Hi everyone.

Recently i started to have problems with my new Macbook Pro. My Wi-Fi was all laggy so i went to network preferences and somehow i managed to actually remove the Wireless option... I only have Ethernet and bluetooth option but no Wireless option.

I also went to the system manager or device manager and i checked out my Wi-Fi card and it said, Status: Network Service Inactive.

I do not know what to do and i really need help fast!! I can't connect to anything...

Here is some pictures: (This will make it easier to understand)

http://img842.imageshack.us/img842/132/u…

http://img856.imageshack.us/img856/6646/…

Thanks you!