No firewall, not much space, and my PC is also my TV/completely-legal-film-downloading service, so hosting at home might be tricky.... Having said that it'd give me good reason to:
a) Buy a new PC
b) Buy a wireless network so it can live in the attic
c) Buy a laptop so I can administer it from my sofa
d) Get a life and just pay the extra £50....
This is one of those expenses that I have enormous difficulty in justifying to the missus (unlike trackdays/billet alloy!).
It just drives me nuts that a 180Gb drive costs about the same as fun size kit kat, but the same space for web-hosting costs more than 5-bed house in Mayfair.

Cheers for the info. I'll know where to come when I need a firewall setting up
Ali