I have 2 computers that I want to network with out buying a hub or switch. I've been looking around and found out about a crossover cable, in whitch you dont need any other hardware. I dont have broadband so im not worried about sharing it among the pcs. Will a crossover cable let me play a lan game against another person? and what operating systems or software do they need to have, anything special? or can i just plug it in and it works?