My server has more memory and RAID drives - I actually use XP Home with 1 gb only because you can get new cheap workstations for $500.00. The only downside is that I have to log on to my server (with a user name and password) when I first turn on the machine - I know that with a domain you would need XP Pro. Gigabit would help - I am just not sure it is worth the investment if you already have a wired router. I am not sure of the cost but my 24 port router cost about $100 new. I have tried WIFI and it seems to be much slower at least in my experience. I also think wired is still better.
