I bought a used imac from a craigslist user, g5 OSX 10.5.5 I've changed everything I can, but when I click Macintosh HD>Users, the name for the main admin is still the previous users name. I assume this is the "short name" since it is lower case w/ no spaces. I was able to set up the user name and info for my wife in her account, but my account is the main account and I cannot find a way to change the short name for the main account. Any ideas? Thanks.