Hi Jeremy, many thanks for the kind help. I think the most users I'll have onine at any given moment is about 100, but throughout most of the day it'll probably be around 35-50.
Rackshack seems to have a good deal on the P4 servers: P4 2GHz, 1GB Ram, 80GB HDD, and 700GB transfer/mth (what I need most as I'm using over 80GB every month at the moment). All this for $139/month. Does this seem like a good deal - or are there any other offers which I should give a closer look?
The only thing I'm worried about is administering the server - is the Ensim WEBppliance 3.1 or Plesk 6 software any good?