looking to connect multiple mifis to one network

my situation calls for multiple mifis(3/4g wireless cellular routers) to be connected to a pirate box

this is due to bandwidth issues, and yeah.

The setup i am going for is a printer share, file share, chat, and maybe other stuff all through the piratebox.

we use multiple mifis to connect to the internet, but i want to see if its possible to connect them all to one pirate box...


Possible?