I need help accessing the router to open a port

Alright, my ISP are not helping me here, they gave me this router to use with my internet service and they will not provide any further support with my problem, which is basically opening a port for my uTorrent to work properly, but the thing is when I try to access my router it asks me a username and password, I tried the manufacturer's default config, but they seem to have changed it and even though I tried resetting it to manufacturer's defaults (Pushed the button for over 1 minute) and unplugging the whole thing, it still won't accept the admin/admin default, my guess is that they have a slightly modified firmware.

What I need help on is to get inside by any means, Im open to attempting to hacking my own router, flashing firmwares, whatever is necessary! I need my thing to work properly!!

Thing is... Im broke lol, used the last of my money on GRAW2, so I can't do it now (maybe in the near future). I have an idea, to fake out some problem and use a keylogger to steal the password from the tech guy, but any other ideas?

Because I can't... That's the whole point of this, I can't access my router to open a different port for it. But if you know how, I'd be willing to try it.