im running 3 clients on 2GB RAM. i just upgraded to 4GB tonight should be here in a few days and i feel sure i can run 4 hopefully 5 clients. if not i have a slave computer with 1GB i can use to run 1 client maybe 2 at 20fps so i have enough power. but for each computer you want to connect to keyclone you have to buy a seperate license for each. it doesent remember your password you have to type that in. and while you are typing you can mute keyclone so it doesent broadcast while typing. i mute in game chat also so i dont freak people out saying the same thing 3 times in a row. im hooked now on multiboxing