I went into Create-A-Team, where you can design your own jerseys. Then I just copied the Dallas roster onto my new team, and replaced the Stars with my new team when I started up the GM. I had to re-name them the Dallas Neptunes, because "Stars" isn't a useable name in Create-A-Team. It worked out though, since I used the Minnesota North Stars logo.
Ok that's what I thought but the way you said you made it sound like you could edit the jerseys of a team without creating a team. Thanks for the clarification.