Welcome to Apple Support Communities.
Apparently Vodafone is one of the carriers that does not support a personal hotspot on the new iPad.
http://help.vodafone.co.uk/system/selfservice.controller?CONFIGURATION=1001&PART ITION_ID=1&CMD=BROWSE_TOPIC&USERTYPE=1&LANGUAGE=en&COUNTRY=us&TOPIC_ID=124454&SU B_TOPIC_ID=124454&SUB_TOPIC_NAME=Features&DISPLAY=LEGACYDEVICE&NAVIGATION_TOPIC_ ID=143547
It's the same way in the US. Only Verizon enables the personal hotspot feature currently:
For future reference, you've posted in the Mac OS X forums.
You'll likely get a faster answer to iPad questions if you post in the iPad forums here:
Message was edited by: kostby