ODBC & Log

Hellow everyone,
    At this moment I am developing a website with PostgreSQL 7.01 as
database engine. I like to create a front-end with MS Access/Visual Basic to
do some administrative jobs. At this moment, i have some questions.

1. How much stable postgres is in case of unstable tcp/ip connection?
2. Is there any way to keep log (by back-end) for each requested query, so
that i maintain a local database, do some updates locally and send the log
to the remote M/C and execute the log there.

    Please Help me, I do not like to write a lot of HTML and Perl code to do
the job.

    TIA.
    --Mursalin.