@CharlesIsWorkin You have described two different features in your question so its a little confusing, you mentioned the ADSL isa backup connection and then later on you mentioned load balancing. IMHO load balancing with a ADSL connection would be a waste of time, usually load balancing uses either a spill over, ratio or round robin configuration. Load balancing is usually used in cases of multiple high speed WAN connections and large volumes of traffic. The idea is that your primary WAN isn't being saturated while your secondary WAN is doing nothing. Backup connection or WAN fail over is to cover the loss of your primary WAN connection. This is often setup alongside load balancing. As I mentioned trying to use your ADSL connection as a speed boost isn't really worth it if the speed is only 3Mbps down.
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