I didn't notice any improvement when using all field names instead of
*. I didn't make any speed and bandwidth consumption test with that
case, but I will try it and give you response.

DB will be available through Internet connection - it will be located
on PC with full-time connection (ADSL), and clients will dial-up to
their ISPs using 56k modems or ISDN.

But first, I plan to try compression on port basis using ZeBeDee and
make tests.