[iancarroll]

Keychain Access makes creating a certificate authority very easy - you might as well just use that...

Besides, I don't understand why you would choose not to trust the certificate, then click it and choose to trust it...

[tbyehl]

For the non-OS X crowd, XCA is a really simple GUI for managing your own CA. Just about everything I have that can use an SSL certificate has one that all of my machines trust.

http://xca.sourceforge.net/

[junkblocker]

Also, xca works just fine on OS X too.