NICs not reconized - FreeBSD 4.9

[Augusto Castelan Carlson]

John Baldwin wrote:
>> I know that they work on
>>FreeBSD 5.2.1, but the application that I'm intend to use only works on
>>version 4.x.
> 
> Note that you can run 4.x binaries on a 5.x system so long as you install the 
> compat4x distribution.

I'm using CoralReef from CAIDA. I compiled the application, and the 
kernel with ATM interface drivers. Can I get the ATM interface driver 
sources and add it to de FreeBSD 5.2.1 kernel compilation? It will be 
compatible? Can I copy CoralReef libs to FreeBSD 5.2.1 too?

Thanks,

Augusto