Updated kernel 2.2.20 & broke my NIC; relatively novice user.

[barrydebian@comcast.net]

I use my Debian system for data backup (rdiff-backup) and to maintain plenty of external drive space (Samba). Yes, this is the heart of my home office computer network; unfortunately as a Mechanical Engineer, most of the application software I need, particular for customer interface, runs on MS.

For years, my Debian system has run with the consistancy of the sun rising & setting; from Potato to Woody. Unfortunately, this has lead to my complacency. 

I typically run apt-get update with my eyes shut and click right through. This led to my recent downfall; I clicked through some warning messages concerning the update to the 2.2.20 kernel binary. I caught the part of needing to reboot. Now, I've lost my network interface; NIC being a Netgear FA311 that uses the natsemi loadable kernel module. The NIC is found on the PCI interface.

There is no longer a natsemi loadable kernel under /lib/modules/2.2.20. The module used to autoload at boot which didn't occur following the recent reboot as the natsemi module couldn't be found. 

Ideas on how to fix what I've broken? If I could be at least pointed in the right direction, that would be great.
 
My system: 
Pentium Pro
Woody running 2.2.20 (stock downloaded binary kernel)

Without a network connection, I will have to move any software from my network connected machine to the Debian box using a floppy or CD-ROM.

Thanks in advance for any help,
Barry Mathieu