You will need ppp and rp-pppoe packages. These still are not part of Owl, but you can get them from Gremlin's FTP server:

rpm -Uvh ftp://home.gremlin.ru/pub/linux/Owl/RPMS.i386/ppp-2.4.4-g1.i386.rpm
rpm -Uvh ftp://home.gremlin.ru/pub/linux/Owl/RPMS.i386/rp-pppoe-3.8-g1.i386.rpm

Of course, you may just download them (say, using lftpget) and then install to another machine.

As root, run

pppoe-setup

It will ask you for

• User name

Enter your user name given by ISP

• Ethernet interface

Enter the name of interface connected to your ISP's network or *DSL modem - for example, eth1

• Use of link-on-demand

You definitely don't want to use it - so say no

• DNSes

Normally this should be left emply, thus telling PPPoE not to modify your /etc/resolv.conf - only in rare cases you may wish to enter server here for using peer-assigned DNS servers.

• Password

Enter your password given by ISP

• Firewall settings

Answer 0, thus telling PPPoE not to modify firewall rules.

Look at the summary of options you entered and confirm them.

Ethernet device must be in “up” state - use

ip link set dev eth1 up

to bring it up if necessary.

Once ethernet device is up (and, optionally, configured), use

pppoe-start

command to fire up the PPPoE link. This command may be issued from startup script - say, rc.local