i understand what your saying, but you need to understand;
if you wish to implement as complex a system as load balancing, you need to be willing to do the research on how to do so.
there are a few methods available:
1) wingate
2) a virtual-machine of pfsense or clarkeconnect
3) a dedicated mid-spec computer with pfsense or clarkeconnect
4) a LB-2 VPN hotbrick, or similar dual WAN routers from XiNICOM, or NetGear.
remember all methods have many major drawbacks.
1) wingate; personally ive never used it for this purpose, but ive heard that its not incredibly effective, but does work, to an extent.
2) virtual machine; in order to access the net, youll have to boot your vm everytime, also its a drag on you main system session
3) dedicaded computer; youll end up spending $+/-500 or so for a decent spec machine which'll handle the load
4) dual WAN router; most home/small business dual WAN routers have limited throughput. usually +/-40Mbps is the max. if your bonding 2 30mbit cable connections and want the max, youll need to look into enterprise-class solutions to handle the data load.