Check this out : microsoft's router ! (done by asus in china) flashed with linux
"You've all heard of hacking the Linksys WRT54G routers.But what about some other routers. I thought I'd try my luck with a router some consider to be one of the worst on the market the Microsoft MN-700. This router runs a version of Windows CE by default but we'll see if we can change that."
And he did it