Does the gigabyte ex58 ud4p board come with built in wireless?
I find it strange the guy at the store didn't try and sell me one.
So is it built in?
Choose a good PCI Adapter.
No, all it has is that gigabit ethernet. http://www.gigabyte.com.tw/Products/Motherboard/Products_Overview.aspx?ProductID=2986
If you want wireless, you'll have to install a wireless NIC, e.g.: