Help: chinese character set support (EUC_TW to/from BIG5 conversion)

1. Would like to try if you've ever successfully put Chinese characters
into the so-called "Postgresql" databases. Their four support
communities appear non-asian so far.

2. My problems is, although the 8.0 documentation (ch.14 pg. 292)
claims the conversion between EUC_TW and BIG5 is avalible, an actual
error message reveals it 's not supported, see below command and error
message:

代碼:

hongkong=# set client_encoding to 'BIG5';
ERROR: conversion between BIG5 and EUC_TW is not supported

Am I missing something?

3. Below lists the server_encoding is EUC_TW (the only Traditional
Chinese it supports on the server side):

代碼:

hongkong=# \l
List of databases
Name | Owner | Encoding
-----------+----------+-----------
hongkong | postgres | EUC_TW

4. fyi, sorry to dump you guy an "show all" screen (selected output):

代碼:

hongkong=# show all
hongkong-# ;
name | setting

-----------------------------------------------------------------------------------

......
lc_collate | C
lc_ctype | C
lc_messages | C
lc_monetary | C
lc_numeric | C
lc_time | C
....
syslog_facility | LOCAL0
syslog_ident | postgres
TimeZone | Hongkong
..
(139 rows)

cheers, thanks in advance.