join expression support in 6.5.1?

 
ecdb=> SELECT fax.* FROM msg INNER JOIN fax_detail ON msg.id =
fax_detail.msg_id INNER JOIN fax ON fax_detail.fax_id = fax.id WHERE
msg.id="MSG-HKG-19990808201019-0051"  
ecdb-> \g
ERROR:  JOIN expressions are not yet implemented
do i suffer from syntax error or is this statement not supported in 6.5.1?
thanks, -brandon