Creating table with unique key.

> > CREATE TABLE cliente (
> > name varchar(100) UNIQUE NOT NULL,
> > username varchar(8) NOT NULL ,
> > key int4 NOT NULL DEFAULT nextval('key_s') PRIMARY KEY,
> > );

Hi this is from a previous post regarding auto-incrementing. I have that
part working, now I am trying to create a table with a field which will
not be null and will be unique to the rest of table. Is this possible and
what is the correct syntax. I have tried and receeved the following:

CREATE TABLE cust (FileNumber int4 unique not null, CompName varchar(50),
FirstName varchar(50), LastName varchar(50), BirthDate varchar(8), Suite
varchar(5), Address varchar(50), City varchar(20), Province varchar(20),
PostalCode varchar(7), Email varchar(50), HomePhone varchar(14), WorkPhone
varchar(14), FaxPhone varchar(14));
WARN:parser: parse error at or near "unique"

Can someone point me in the right direction. Thanks.

--
Colin Dick
On Call Internet Services
cdick(at)mail(dot)ocis(dot)net