How do I get windows to use 2 connections simultaneously? 3g usb+wifi.

Hey guys.

I have a bit of a canundrum. I have 2 mobile broadband connections, one for my computer and one for my iPhone. It's basically the same subscription over here. I live a bit off the grid so I can't get any DSL connection unfortunately.

So they both have a limited download rate and my 10 gigs each month dries up pretty fast, and then I'm left with a 15kb/s connection on both devices. Now I've used my iPhone as a wifi router to access it and download through that connection on my pc, meanwhile the USB dongle 3g connection has been there and I've just assumed that they work together to bring me information, but obviously that doesn't happen. Now I realize this won't do a lot, but over here it's a doubling in bandwidth, and from 15 to 30 kb/s is quite a jump.

So my question is it possible to somehow bridge them and make the computer use both at the same time, thus doubling my speed? Any help is much appreciated!

Not really.