selects possible in VALUES() claueses?

Is it possible to do this?

INSERT INTO Usrs(
first_name,
middle_name,
sur_name,
sur_name_extra,
gen_id,
login
)
VALUES (
'Dennis'::text,
'Keith'::text,
'Gearon'::text,
'none'::text,
(SELECT gen_id FROM Gens WHERE gen = 'none'::varchar),
'dude'::varchar
);

It's puking with the following error:

Error - /phpPgAdmin/path/and/file -- Line: 112

PostgreSQL said: ERROR: parser: parse error at or near "SELECT"
Your query:
INSERT INTO Usrs(
first_name,
middle_name,
sur_name,
sur_name_extra,
gen_id,
login
)
VALUES (
'Dennis'::text,
'Keith'::text,
'Gearon'::text,
'none'::text,
(SELECT gen_id FROM Gens WHERE gen = 'none'::varchar),
'dude'::varchar
)
--

Carpe Dancem ;-)
-----------------------------------------------------------------
Remember your friends while they are alive
-----------------------------------------------------------------
Sincerely, Dennis Gearon