Hey Pastorbilly,
Thanks for using Apple Support Communities.
If you are trying to change the Apple ID follow the first article.
If you are trying to switch Apple iD's on a device follow the second article.
Apple ID: Changing your Apple ID
http://support.apple.com/kb/ht5621
iOS: Sign in with a different Apple ID in the iTunes Store, App Store, and iBooks Store
http://support.apple.com/kb/ht1311
Have a nice day,
Mario