ODBC & bytea

I'm having trouble inserting binary data into a column of
type bytea using a dynamic INSERT. The trouble seems to be if the
data contains the values 0x5C (ASCII backslash) or 0x27 (ASCII
singlequote). When I bind the input values for these I'm using
SQL_C_BINARY. Shouldn't the data just be passed straight through,
without any evaluation? Is there something special I need to
do to make this work (or is this a bug?)

Platform: linux, x86
PostgreSQL version: 6.4.2 (installed from the linux RPM's)
ODBC driver: the one included with the 6.4.2 RPM's (I haven't
found the version of this clearly labelled anywhere).
-rwhit

.........................................................
Robin Whitworth Gold Wire Technology Inc.
rwhit(at)goldwiretech(dot)com P.O. Box 103
617.876.9473x1603 Belmont, MA 02478-0001