Wireless connection still cannot access entire company network

I have had this annoying problem with my wireless card. I does not want to
recognize anything outside of its /24 subnet, including VPN/WAN connections.
These VPN/WAN connections are part of my Windows 2003 R2 native AD Domain,
yet when I try to ping or access network resources at these remote sites the
connection fails. If I plug back in my wired NIC connections, connectivity
to the entire network, including the remote site resources, is restored.

Is this a security feature of the wireless connection, that anything outside
of its defined subnet cannot be accessed? Can this be overridden and how?

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Edward Ray
CCIE Security, CISSP, GCIA Gold, GCIH Gold, MCSE+Security, PE