That URL would not work for me this morning, but this one did:
http://www.idsia.ch/~juergen/. The specific article about computing
the universe is at:
ftp://ftp.idsia.ch/pub/juergen/everything.ps.gz
It does appear to mirror some of the considerations raised by Wei and Nick
in terms of possible universes. I'll try to comment on it later.
Hal