DBDATE with ODBC drivers for 7.22 SE

I'm trying to access 7.2 SE from an NT 4.0 desktop using the ODBC drivers. I've finally gotten my ODBC drivers up and working. Anytime I try to pass dates to the database, either through Infomaker or a 3rd party program (written in Powerbuilder), I get an 'Invalid characters at end of datetime or interval'. All of my dates in the database are formatted as datetime. I'm pretty sure that DBDATE or DBDATETIME need to be set, but nothing I've tried seems to work. My Informix rep tells me that he 'thinks he's heard something about this being a known issue, but he's not sure...' (and suggested I post here). Has anyone seen this before, or can point me to a source for info? TIA, Sheila bowman@uthscsa.edu