Multisite

I know these addons can add a blog into a current multisite installation but is there a way with this or any other program that you know of that you could offer a full multisite account and have it automated

so say joe signs up and wants a multisite, so a program either installs it on the current cpanel acct or a new, it dosent matter to me, but then installs wp, makes it multisite, then gives him the admin and password?

Thanks