>  I can ping my supplier haven.ios.com just fine,
> but if I try to ftp to ftp.uni-regensburg.de, ftp just sits there.

I don't have my machine in front of me, but take a look at /etc/netstart
and see where it gets a gateway for "route add default."  It looks like
you aren't telling the kernel (either through "route add default" or
through a switch to pppd) that traffic for all addresses whould go
through ppp0.
--
Todd Masco     | "Schooling serves to reduce the risk of being eaten."
cactus@hks.net |                           - Scientific American, June, 1982
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