Wireless Set up for Dell XPS 410

I have always been using a direct wire connection for my Dell XPS 410,  I am moving into a place now where my computer will not be the main set up for the wireless and now I will have to connect my computer to the wireless network.  Does anyone know how I do this?  Do I have to buy some kind of wireless card?  I don't see anywhere I would plug a wireless card into...Does dell xps 410 have built in wireless...please help anyone thanks!