Table msysconf

Hi !!!

I am novice to Linux and PostgreSQL, so it is possible my question is
stupid.
Exactly I have 2 problems:

1) From time to time I have following info:

    ERROR: Table msysconf does not exist

Is it any system table?
Is it important?
My database seems to be OK.

Additional info:
    Postgres 6.4 on Redhat 6.0
    postmaster -i -B 60 -o '-S 4096'
    Intel Celeron 433, 64MB RAM, HDD 10,2GB

PostgreSQL is used as some kind of Data Mart (one of the table have over
4,000,000 tuples)
Max. 20 users (but max. 10 in one time).

2) ODBC driver on Win95 (I know what You say -:))

I have problems when using ODBC drivers to PostgreSQL on Win95 (VisualBasic
6.0 application).
When I make SELECT everyfing works fine, bat I can't make any UPDATES or
INSERTS.

There is a flag Read-only in Options of a ODBC driver but it doesn't matter
if it is on or off.
I always have error info.

Any help is welcome.
Pawel.