http://www.sendspace.com/file/4p9edj (contains windows x86, mac os x i386 and mac os x ppc versions)
- Download pntedit.exe application (see link above)
- Grab copy of AppSupport from firmware 1.1.2
- Run "pntedit.exe read AppSupport PhoneNumberTemplates.txt"
- Edit PhoneNumberTemplates.txt
- Run "pntedit.exe write AppSupport PhoneNumberTemplates.txt AppSupport.Patched"
- Replace AppSupport on iPhone with AppSupport.Patched
The number of entries for the phonenumber templates table is 32. If you have less entries in your tables file then the last entry will be duplicated x times which should be ok. If you have more entries in your tables file then they will be ignored because there is no room for them.
Have fun.