Iv found from past experience that it's got to be your friends or people you get on really well even if they play **** on their instuments you've just got to persuade them to play and learn more. I was in a band with a guy who was a pretty good guitarist(not brilliant) but he had a **** attitude(eg. always letting people down etc.) so you've got to find friends you can trust and generally chill out with. A band is all about having fun so MAKE IT FUN!!!:)