i want to network my house

[arnavk007]

so as you read i want to network my house with a file and print server and here i list the various systems i have :--

system A : will be used as the server . it's a laptop with a centrino duo clocked at 1.67 ghz 1 gig ram 80 gig hdd i want to share an external/usb hdd along with my hp laserjet using it. comfortable using linux but the problem is that i have ubuntu installed on a partition it prints using my printer but it doesnt have option of print on both sides(manual).

system B :- its my new desktop which i will recieve by 15th after transferring data to this one i will wipe system a which is my current sys clean and experiment with it.

system C :- another lappie with vista

my ps3

i have a airtel wifi router

so plz help

i will be running my lappie 24/7