Libpq and Borland C++ Builder 4

Hi!

When I try to use the libpq.lib (from the win32 psql.exe interface tool)
library with BC++ Builder, I get a message : LIBPQ.LIB contains invalid
OMF record, type 0x21 (possibly COFF).

First of all, what are OMF and COFF ?

I've found a tool (in C++Builder bin directory) to convert COFF2OMF, but
it didn't work.

Does anybody has a re-compiled libpq.lib which works fine with
C++Builder 4 ?

Please help!

Thanks

JC.Fabre