Administrator...?

I have Windows XP Home on my desktop (with dialup
internet connection) and Windows ME on the laptop. I
have 54G Belkin Wireless adaptors which are installed
correctly. I have been able to set up a wireless network
allowing internet connection sharing but am unable to
configure the computers for file and printer sharing.
Their names are unique on the workgroup and when I am
able to run the connection wizard on both computers.
When I try to view my connected computers I received the
following warning message
"[workgroup] is not accessible. You might not have
permission to use this network resource. Contact the
administrator of this server to find out if you have
access permissions.
"The list of servers for this group is not currently
available"

I am signed in as the administrator for the computer.

When I attempt to view computers on the laptop I simply
cannot see any computers but do not receive a warning
message.

I run Norton Internet Firewall configured to allow access
to the laptop.

Any advice to enable me to file share will be much
appreciated.