When not connected to VPN, I can access my home Local LAN. ipconfig and route look like this:

http://gabe.misura.org/tmp/ipconfigAllNotConnectedToVPN.txt
http://gabe.misura.org/tmp/routeWhileNotConnectedToVPN.txt

When I connect to VPN, I can no longer connect to my home local LAN. ipconfig/route look like this:

http://gabe.misura.org/tmp/ipconfigAllWhileConnectedToVPN.txt
http://gabe.misura.org/tmp/routeWhileConnectedToVPN.txt

Google suggested:
http://superuser.com/questions/247852/rerouting-local-lan-and-internet-traffic-when-in-vpn
I have not tried it just yet because it is not very clear from that example and my IP/routing settings what I should do.

http://forums.speedguide.net/showthread.php?209167-Cisco-VPN-client-connects-but-restricts-LAN-access-even-when-option-is-ENABLED
3rd post seems promising.