How can i set up a network at home between my Windows Vista Laptop, XP Tower PC and Xbox 360?

I have recently picked up a Netgear gs105 ProSafe 5-port gigabit ethernet switch and it works fine for the use of one of them, however, i can't use the internet on two devices at a time and i have to turn the modem off and back on with only one device. What software do i need to set up a network so all three and possibly more devices can use my internet connection. My internet i use is strictly non-wireless.How can i set up a network at home between my Windows Vista Laptop, XP Tower PC and Xbox 360?
You need to get yourself a router to replace the switch. A switch can not issue IP addresses and the modem can only issue one max. That is why you can only connect one unit. A router will create enough IP addresses for all of your units to be connected at the same time.