According to your description the D-Link Wireless Nic that connects to the D-Link DIR-625 Wireless Router is the *only* nic that is actually in use to begin with. The other two Gigabit adapters are not even being used.
Even if all three nics were actually hooked up to something that would simply be wrong. Every Nic in a machine (wired or wireless doesn't matter) has to be on a separate subnet. You do not have a 3-subnet LAN that I see in your description. Even if you did have a 3-subnet LAN it still would not matter,...a machine is to have only one Default Gateway. Traffic destined for a network that is not "directly connected" to the machine or does not have a Static Route set will always use the Nic with the Default Gateway.
Also when a VPN is activated it becomes the Default Path for the entire machine and odd things can happen if you activate more than one VPN at the same time.
So, no,..you cannot do what you are asking.
On top of all that,..there is no point and no benefit in doing what you are asking even if it was possible. TCP/IP traffic does not flow over a connection in that manner,..it flows over the path according to decisions based on Routing Tables, Nic binding, and protocol behavior (IP in this case)