CREATE OPERATOR error

   Can anybody explain what might be happening here?

abc=> create operator =* ( leftarg = varchar, rightarg = varchar,
abc->    procedure = vciceq, commutator = =* );
ERROR:  parser: parse error at or near "varchar"

   The function "vciceq" already exists, and works.  I've tried a
number of variations on the above with different spacing, with no
success.  Is there some syntax peculiarity I'm missing?  This is on
PostgreSQL 6.5.2 on a Linux x86 system (RedHat 5.1, kernel 2.0.34).
   TIA...

-Brandon :)