I have a laptop that's connected to my network wirelessly, but it cannot see any other resources on my wired network except for the one desktop belonging to the same (default) workgroup.
My network contains, in order:
1 cable broadband modem
1 Vonage VoIP box (firewall 1)
1 D-Link 54G Router + 4 port hub (firewall 2)
...(wireless) 1 HP Pavilion laptop
...(wireless) 1 Apple Airport Express with iTunes
...(wireless) 1 HP 2710 multifunction network printer with WiFi
---(wired) 1 HP Pavilion Desktop PC
Both the desktop and the laptop are part of the same workgroup. The desktop can see and access the AirPort as well as the printer. The laptop, however, can only see the desktop on the network, and seems to be unaware of the printer, or the Airport.
On my laptop, I've disabled XP Firewall. The only utility I have running are Norton Antivirus 2005 and my Cisco VPN client, for work.
There's something going on with my laptop that's preventing it from seeing the other resources on my network, and I don't know what. The IPs are all part of the same local subnet, and I can successfully ping everything, but there's still something else.