Help with wireless link sys please

Hello everyone,

Please could somebody point me in the right direction
I have 2 linksys wireless 802.11b usb adapters which are working quite
happily
between 2 machines. 1 winxp pro the other win2000 pro, the signal
strength is very good and both can talk to each other. however i cant
seem to share the internet connection, the host is win 2000, I know
there is nothing wrong with the settings because i can share the
internet connection if I unplug the adapters and use cable to network
them, we are using ISDN. Any help would be greatly appreciated thanks
in advance