Didn't look to hard...

http://www.gentoo.org/doc/en/gentoo-x86-install.xml

22.Final Network Configuration

Edit the /etc/conf.d/net script to get your network configured for your first
boot:

Code listing 22.2: Boottime Network Configuration

# nano -w /etc/conf.d/net
# rc-update add net.eth0 default

If you have multiple network cards you need to create additional net.ethx
scripts for each one (x = 1, 2, ...):

Code listing 22.3: Multiple Network Interfaces

# cd /etc/init.d
# cp net.eth0 net.ethx
# rc-update add net.ethx default

> -----Original Message-----
> From: owner-kclug@marauder.illiana.net
> [mailto:owner-kclug@marauder.illiana.net]On Behalf Of Apollo
> Sent: Tuesday, December 31, 2002 11:25 AM
> To: KCLUG
> Subject: Gentoo n00b help
>
>
> Hello,  I am new to Linux.  I have tried RedHat a few times but always get
> frustrated with the RPM bullsh*t and give up.  I've seen several posts about
> Gentoo and the emerge command so I decided to install Gentoo and give it a
> try.
> The install, configuration and almost everything else I've tried has worked
> on the first try.  The only things holding me up are a couple of commands
> which I need to run on start up.   I have to run these commands at the
> prompt after the system starts.
>
> ifconfig eth0 up
> dhcpcd eth0
>
> hdparm -X66 /dev/hdb
>
> I've looked at the docs at Gentoo.com and searched the forums but I can't
> find anything that tells me how to run these on startup.  If its too
> complicated to explain here if anyone knows where I could find instructions
> I'd really appreciate it.
>
> Thanks
>   Apollo
>
>
>
>