Newbie question about datatype conversion

I can't seem to figure out how to convert a varchar to a text or a text to char or anything. I've tried doing exactly as the good documentation says but this is the kind of response I get.

foo=> select orgname from organization;
orgname
----------------------
Douglas Ventures
BobMart
(2 rows)

foo=> \d organization;

<---SNIP--->
| orgname | varchar() not null | 25 |
<---SNIP--->

foo=> select text(orgname) from organization;
ERROR: function text(varchar) does not exist
foo=> select orgname::text from organization;
ERROR: function text(varchar) does not exist
foo=> select char(orgname) from organization;
ERROR: parser: parse error at or near "orgname"
foo=> select orgname::char from organization;
ERROR: function char(varchar) does not exist

I must be doing something really silly but I just don't see it. Any suggestions? TIA

< Note: Redhat Linux 5.2 postgreSQL 6.3.2 >
-Andrew
adouglas(at)bellsouth(dot)net