a couple mac OSX questions

[Mike Arrigo]

Hi all. I had a couple questions about leopard itself. First, are there any 
settings that allow you to control the packet size when using the internet, 
things such as mtu, etc? Or does the mac automatically adjust this? I wanted 
to make sure I was getting the best transfer rates with my high speed 
connection. Also, I was looking in the activity monitor at the different 
processes running, does the mac have something to similar to services, or 
are the 12 or so processes that were displayed part of the operating system 
itself? Thanks.