I had a problem, I had to work in 2 different networks but with only one default gateway i was not able to talk to both networks. So if you open up a command prmp(cmd) but open it by right clicking and then clicking open as admin. Once your at the command prompt type this but change my network numbers to the ones you want to get to. “route add 10.128.0.0 mask 255.255.0.0 10.100.1.91″
and boom without haveing to configure anything on my default gateway now i can access both networks from my one machine. Thanks and let me know if you have anty questions.