Hey,
Saving up at the mo for a little server machine for the house and am looking for some help with the planning before I finally get it

Currently Ive got my Laptop (Win7), Bros Laptop (WinXP), Bros PS3, My 360, Dads 360 and my Xbox1 to get served up.
My dads not a Live player and havnt yet run a cable downstairs so I burn him DVDRWs of films/TV to save him using my XB1 to keep up (havnt got round to getting a USB HDD or stick yet which would be easier) With my Bro its a case of him ftp'ing to my XB1 to grab what he wants so having a nice fast network seems the way to go.
Now, on my Base unit what would you suggest I use OS wise, XP, 7 or Server 2008?
For XP/7 I could set up standard sharing folders (SMB) for XB1 and Lappys then use WMP/TVersity etc to share to the 360s. Reading a bit more, is WS2008 more cut out for this sort of job? Do the xboxes have any problems logging in to a Active Directory (is a AD needed or can you still do simple sharing with WS08?)
Hardware wise, I assume this is how the setup would go -
Modem > Router > Server NIC1
Router Wired to My lappy, my 360, my XB1.
Router Wireless to PS3, Bros lappy.
Now is it possible to have the cable from my dads 360 running into a separate NIC on the server with him still being able to access the network but NOT being able to sign into Live? Daft as it sounds, its too much for him, hes a 'put disc in and play' or 'press videos - pres play' sorta guy bless him

Thanks in advance, Im slowly getting my head round anything past simple networking
