Confused - Wireless

[Dapper]

howdy, sry for asking a silly question but my mobo has a built-in WIFI option... Can I use just this mobo with my router for wireless?

I own a WRT54GSv4

im new to all this, so please forgive my lack of knowledge, will I require a wireless PCI card or does my motherboard do this for me?
thank you

 

[FTM]

if its built in it should have a connector for an external aerial on you I/O plate on the rear

though on my A8V deluxe board asus supplied a pci card with an external aerial