Wireless networking how & wots needed altogether

I am looking to set up this network, i want to connect 3 PC's with 1 printer & 1 scanner with also a PS2 if poss, my laptop has the wirless network card and my 1 pc has the pci wirless card i gather i need to get a wirless router so does that mean i need to get another pci card for 2nd pc and wot do i need to connect the PS2 and the 2 pherpials to the network

Thanks in advance


Moved to network forum as just noticed it

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