SQLExecute get result to client?

Hello,

I have one question. It's not fatal error but very annoying thing.

My configuration:
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server - Linux RH 7.2 + postgresql 7.1.3
client - WinNT 4.0 Workstation + postgresql ODBC 7.01.00009

Problem description:
--------------------
I have application (without source) that test table with:

SQLPrepare "select * from table" with return code 0
SQLNumResultCols with return code 0
SQLDescribeCol with return code 0 (for each column)
SQLExecute with return code 0
SQLFreeStmt with return code 0

There is difference between Postgres and MSSQL ODBC. Postgres load whole
result to client in SQLExecute but MSSQL not. Table have +-500000 rows and
transfer through net takes very long time.

So my question is: Exists some patch to fix this? Or could you help me
with basic information what I have to change?

Thanks

Luf