So you want to setup a VPN server at home or create a VPN tunnel to a work VPN server?
If its the former see these...
OpenVPN is also an alternative and certainly more secure...
See the reply in this thread from Alex Zhaozx for additional information concerning routing...
To create a PPTP VPN link to your work VPN server see this...
Lastly I suggest posting to the TechNet Windows 7 Network forum for further help with this issue...
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