read this its tested
http://forum.mikrotik.com/viewtopic.php?f=2&t=44562

can you explain more? you saying to have external proxy i like the idea but i will need help with the routing settings maybe i can use (ipcop with advanced proxy it come with Update Accelerator for windows updates)
lets work on it if its possible.

Is it a hard qustion or no help for new members

I need to setup the proxy server to use both gateways is it possible? if yes please help