Configuring new ethernet interfaces

[Alex]

Hi,

I have an existing fedora15 x86_64 server with two interfaces that
I've moved to a different motherboard and processor with dual onboard
Intel 1000mbs ethernet controllers on it (e1000e driver). After moving
the system to the new motherboard, for some reason the ethernet
interfaces changed from eth0 and eth1 to eth4 and eth5.

Why did this happen, and how do I change it back to eth0 and eth1?

It looks like udev  has something to do with this?

Thanks,
Alex