Hardware for 3 PC's

Now ive been looking over these forums and the internet for the last week, trying to figure this all out.

Can someone please just post what hardware is needed for me to mulitbox with 1 PC and 2 laptops, i would like to have it so 1 KB and mouse controls all PC's/Laptops at the same time? can this be achievable with just 1 KB/mouse and 3 wireless receivers, coz i asked someone in a electronics store today who said, its impossible for the mouse to sync with all 3 receivers.

Fursphere wrote a 5 box getto thread, tells how to get the keyboards you want to work here

Thanks mate, this is just what i wanted to know.