The term "Increase" probably doesn't apply, but maybe "Optimize" your
connection settings does. There are Registry settings that affect how the
PC handles data packets. In most cases, the defaults are sufficient. But,
you can modify them with a program called TCP Optimizer that handles
the Registry changes automatically, based on your connection type. The
program was just recently updated.
http://www.speedguide.net/downloads.php
It would be a good idea to read through the FAQ on the product before
attempting any changes to your system.