permission rejected

Dear list,
On trying this:

mfx=# GRANT SELECT ON employee(eid,forename,rights) TO
GROUP accessor;

I got this

ERROR:  parser: parse error at or near "("
ERROR:  parser: parse error at or near "("
mfx=# select version();
                           version
--------------------------------------------------------------
 PostgreSQL 7.2.1 on i686-pc-cygwin, compiled by GCC 2.95.3-5

It looks to be right as far as the sql handbook goes and Bruce
Momijan's book, is this a version thing or have I misunderstood?

TIA

Paul Butler