Networking PC & Laptops w/ Linksys WRT54G & using Aircard 595U for Internet

I have set up my PC to connect to the internet using the Aircard 595U. I then connected the linksys and made sure all PC’s & laptops could see each other. I am now trying to access the internet on my laptops and I am having no success. My PC is 2000 Pro and laptops are both XP. If any one can help me it would be greatly appreciated.