Change Voicemail Number?

[hoss]

Help!

I had been using YouMail on my Treo with this SIM before and it would dial into the special YouMail number just fine. Since switching to an unlocked iPhone I want to stop using YouMail and just use the standard AT&T Voicemail. I found the command to switch it for when people call me, so that they get directed to AT&T Voicemail, but when I hit the voicemail button on the iPhone or press and hold "1", it still goes to YouMail. I can call the AT&T Voicemail number and listen to them that way, but how do I change the number the phone actually calls?

Thanks.

Ok.. I found it. I'll post the solution here just for archival:

AT&T / Cingular *5005*86*OWNNUMBER#