The subject was self-explanitory.

Also, I've compiled support for my network card (Netgear FA311) into my new kernel. How do I make eth0 start at boot?

Edit /etc/inittab.

id:3:initdefault:

Change that to whatever the runlevel you want.

Sorry, I wasn't clear enough on that one. How do I modify the runlevels themselves?

I think you can find it under Preferences -> Services (under Gnome, anyway).

the run levels are links in folders rc0.d rc1.d and like that somewhere in /etc/rc.d or something
if you want to edit run level 3 go to rc3.d
there you find links that start with S (start) sometimes there are also K (kill) links
the S links are started in numerical order
if 2 have the same number they go alphabetically i think
do ls -l
and you see where the links point to startup scripts in init.d

your ethernet card is started by a network startup script

my initial guess is you network scrpt is already running at boot so you have to setup eth0
if you have done that you might need a setting in modprobe.conf for the new module to load automatically

can you load the new module as root by hand with modprobe and if so what is the output ?
what if the output of ifconfig ?
and is there anything in
dmesg | more
about eth0 ?