Dex LoneWolf

Hey there, im running a DWay 4000 system, networked using a Linksys WRT54G Broadband Router, the Direcway system's host computer is fast, it downloads up 142kb, but the client computers running off them, are lucky to get up to 10kb, is there any way i can fix this problem? one of the clients is connected into the router and has internet, and the other one is connected Wirelessly. thanks for your time. -Dex