psqlodbc and wide characters under windows and Unix

Hello
I am writing a generic program that
should work under both windows and Solaris to access a postgres database
using ODBC, the problem I am having is inserting wide characters under
windows now, when I bind the wide character variable as SQL_WCHAR and bind
to a c type of SQL_C_WCHAR, the insert statement fails and somehow the
insert statement abruptly ended before inserting the value of the wide
char. I tried to use many combination without success. 
I am using psqlodbc version psqlodbc-07.03.0209
to access a postgres database 7.4.2
The problem I am having with this driver
is under windows now, using the Postgres ODBC driver (ODBC 3.51)
Any help will be appreciated.
Ibrahim
ERG Transit Systems
247 Balcatta Road Balcatta WA 6021 Australia
Tel: + 61 8 9273 1620 Fax: +61 8 9273 1535
Email: ielfayou@xxxxxxxxxxxx Website: www.erggroup.com