How to set up Aircards and Routers

I just got a cricket A600 Broadband aircard, i used to have dsl with qwest and a 4 port wireless dsl router to access the internet and play games.

My question is how do i hook up the wireless dsl router so that i can continue to use the router and have my xbox access the internet?

 

Find a router that accepts your aircard. I know Linksys made routers for Sprint & Verizon - I don't know about Cricket.
Make you PC that has the aircard a router. Which may mean you have to add a network card and a switch, or a router card like this