ftp and telnet between computers

[Cheryl Homiak <chomiak@chartermi.net>]

I am working on a computer for friends and want to be able to login to it
once they take it home so i can fix things at a distance if they have a
problem. I haven't found a howto that covers this, but if there is one
please steer me to it and I will read it.
My questions involve:
1. differences between telnet and ftp servers--right now I have ftpd and
telnetd-ssl installed on both boxes.
2. ip address to use: I have a cable connection to the Internet so only
have one ethernet ip listed but the other box is on a ppp connection and
two ips are given when running ipconfig.
(3) Other things I need to do to make these connections work between
boxes.
Tia.

-- 
				Cheryl