@FuZion
What type of connection are we talking about here? Are you sure it's PPPoE you need at all?
If it is, you might want to check out
Roaring Penguin PPPoE. I fiddled with the (supposedly) built-in PPPoE for hours on end after installing Mandrake on my PC, only to find out that .... it didn't work :-|
rp-pppoe did the trick, though, and it was surprisingly easy to configure once installed, simply type 'adsl-setup' or something similar in the console and then type in your info.
Don't know about A1's, though, but there is a PPC version.
---Edit---
I just reread your first post, where it says you found pppoeconf, do you mean pppoe.conf?
Because if you do, you might already have Roaring Penguin installed. Try typing
adsl-setup in the console (as root), and after that you might need to type
adsl-start (can't quite remember).