My main PC is running Windows Vista. My internet is via 3g to a USB port. How can I make this my gateway, sharing my internet connection and files, etc., with other devices, including my Archos, a slingcatcher, and my laptop? I do have my Linksys WRT54G router, but my gateway simply refuses to acknowledge that I have an internet connection, and the best I can accomplish is a local network, with 'limited connectivity.' Any ideas or detailed instructions would be most appreciated.