hiya,
the only thing to remember once you have set your network up is to get a firewall ASAP. If you are sharing folders throughout your network it would take less than a minute for an experienced hacker to gain access to that folder, place a trojan so you dont know he is there, and then edit/delete/print (on your printer) all the files in that folder at will...
I talk like i know what im going on about
Good luck, if you can get broadband your connection will be much better
WhiteDevil