Adhoc bug with Vista Help

I recently set up a adhoc network and the 1st time i used it worked great.
following that i have had problems with the connection. The remote computer
connect to the host system no prob but it only has a local connection only.
ICS is enabled on both my sprint card and my wireless lan card is enabled
with ICS. i have tried to delete and recreate my adhoc connection and delete
the wireless connection and let it recreate on reboot. it appears as though
this might be a bug in vista. if any one has an idea about this please let
me know.
thanks David