getting started

Hi,
I am running a gentoo system and can't seem to get started. I have
postgres beta2 sort of set up and running (I did a initdb and have the
server running) but can't get either pgadmin or phppgadmin to start. I
get

rux data $ pgadmin3
Xlib: connection to ":0.0" refused by server
Xlib: No protocol specified


(pgadmin3:667): Gtk-WARNING **: cannot open display:

from pgadmin, and can't seem to find how to connect to phppgadmin...
Cheers
Antoine

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