'libpq.lib' linking problem with VC++

My apologies if this is not the appropriate list for this, but the "novice" list has provided no response for weeks.

I'm using Visual Studios C++ Express 2008 on Windows 7 with the "standard" (pre-packaged) 64-bit Windows distribution of PostgreSQL v.9.0.4 and I am having unresolved refs when linking to libpq.lib. The relevant elements of my program are:

#include "stdafx.h"
#include "libpq-fe.h"
using namespace System;

int main(array<System::String ^> ^args)
{
...
char *pghost = "localhost",
*pgport = "5432",
*pgoptions = NULL,
*pgtty = NULL;
char *dbName = "mydb";
PGconn *conn;
/* make a connection to the database */
conn = PQsetdbLogin(pghost, pgport, pgoptions, pgtty, dbName, NULL, NULL);
...
)

Linking against libpq.lib in the postgres "lib" directory, the error I get is:

DBTest.obj : error LNK2001: unresolved external symbol "extern "C" struct pg_conn * __cdecl PQsetdbLogin( ...

In the project properties I have included the path to the postgres "lib" directory and listed "libpq.lib" as a linker input.

So, what am I missing? How do Iget this thing to link without error?

Regards,

- Roy

=*=*=
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