[CentOS] PostgreSQL database design tool

Been thinking about playing with PostgreSQL. When I did my research, on 
the PostgreSQL site, there were a few tools they "recommended" for 
design, display of schemas, etc.

Open System Architect seemed to fit my demands, but unfortunately, the 
installation documents do not exist, at least the links go in a circle 
to nowhere. There's a binary which I assume can be executed, but at 
least one of the libraries are versioned wrong, and I don't want to play 
with symlinks just to make this work.

Has anyone installed a tool for PostgreSQL that will display logical and 
physical data maps of a database such as what OSA is supposed to do? Can 
someone recommend something they feel is worthwhile, regardless of it's 
purpose, when running PostgreSQL? I'm running 64 bit Centos 5.7 and 
PostgreSQL 8.1.

Thanks for any opinions.

steve campbell