Read Only from ODBC

I downloaded the ODBC driver for postgres and installed it on my Win98
Client.  I'm writing a Visual Basic program that accesses the PostgreSQL
server on my Linux box.  It can read the data fine but It won't write data.
I get a read only error when I try.

I have unchecked the read only checkbox in the ODBC setup.  Also another
program (not written by me.) can write to the database using the ODBC
driver.

Any Ideas?

Thanks