how to populate Postgresql base with users ?

[Leonardo B. Cuquejo (Arachnius)]

Dear Sirs,

I want to implement PPTP server (either mpd or poptop) with CHAP+MPPE
authentication against freeradius.

I've successfully configured freeradius+postgresql, but I'm lost in the
database, I've no idea how to populate database.

Can anyone provide me some dump for example ? (including sample user,
sample password and sample parameters for connection)

Thanks!