Erased the wrong package

Hey Fedora,

I made a mistake when I was cleaning up my Linux box and by mistake I removed/erased the packages "network" And without dose I can't connect to the internet anymore :(

I tried to re-install them using yum with sudo but because am not connected to the web I can't access them and I get errors with mirrors.

I hope someone can help me?

Thanks
-Blue

Extra Info:
Linux: Fedora 17 LXDE Spin
Right now am on my Windows 7 pc