working with two nics

I have a windows 7 PC with two network cards, one connect to LAN1. LAN1 is very protected with a proxy server, URL filtering and blocks everting beside http/https.
The second network card is connect to LAN2 - ADSL with minimum protection.
I want to use remote desktop connection and connect to my terminal server, located on the second network. (with or without VPN)
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This might need a liitle more to the question....  
My answer would be right now disconnect lan1
If you know the ip address of the terminal server, add a route entry to make all the traffic destined to the server to pass through the lan2 interface.

command example: route ADD MASK IF 2

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There is no static route to add.

The PC is on both networks at the same time (in spite of that being a horrible idea), there is no route to create.

Open Remote Desktop Connection,...identify the TS box using the IP# (naming is probably failing due to the duel nics),...then just tell it to connect.

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