First of all, Hello and welcome to LQ!
the menu clicks are:
Applications-System-Configuration-Configure Your Computer
Then you need to enter the root password
then click
Network and Internet - New Connection
then choose
Modem- next
manual -next
choose the appropriate port (the first one probably) (next)
Choose the appropriate dial up options (next)
next, your
IP parameters (next)
DNS settings (next)
do you want to start the connection at boot? (probably no) (next)
try it now? (yes) (next)
titanium_geek
(
www.google.com would be a good place to start next time.

)