How to "Load Balance" without changing the IP?

I used RV042 10/100 4-Port VPN Router. I've configured the dual WAN, and enable Load Balancing for faster internet. But if I accessedhttp://ipchicken.com/ my IP Address is always chaging? How can I setup the router sticking to just one IP address?
 
Let me preface by saying....taking two circuits and using them at the same time, even with protocol management from the LB is most likely not worth the effort.

But for the sake of the argument, the first hurdle you have is that both circuits need to have static IPs. What type of connections are they?
 
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