Here you go with a little bit of help:
1) !!!-USE SSHD INSTEAD-!!! it is secure, telnet is not. If you have to use telnet, make sure you have emerged netkit-telnetd in net-misc. You can start it in /etc/init.d by issueing the command
You can make it start at boot, by issueing the command
rc-update add telnetd default
This will put it in your default runtime.
2) Edit /etc/conf.d/net and in there you will find a line:
Just uncomment this, and add eth0 to your boot
rc-update add net.eth0 default
3) Try this on for size, http://forums.gentoo.org/viewtopic.php?t=22759
it is the same idea with Sun.
4) I actually run X-Free 4.2.1 and am happy with it no problems with TNT2 card under Fluxbox. Just make sure your drivers are correct (xf86config and /etc/X11/XF86Config).
p.s. for more Gentoo related questions, try the gentoo forum at http://forums.gentoo.org
LQ is great with the general quesitons