I usually put the same in both and it tends to work ...

well at least with vpn tunnels to watchguard, Juniper and Cisco Routers and firewalls

Please also have a look here:

http://www.experts-exchange.com/Software/System_Utilities/Remote_Access/VPN/Q_25173414.html#a26821256

I have posted on the above forum and it has diagrams of the setup that may help

There is no harm in putting in both, and if you have dial-in/out set to both you need both passwords there (or the dial out one there and the dial in one in General Set Up

I think I used my free trial to experts-exchange a long time ago, so I cannot access your link.

In some browsers if you scroll right down to the bottom you can see the solutions ;P