Bluff: +12 mod (3 ranks)
Diplomacy: +12 mod (3 ranks)
Intimidate: +12 mod (3 ranks)
Knowledge(History): +6 (1 rank)
Knowledge(Local): +6 (1 rank)
Knowledge(Nobility): +3 (1 rank) - deals with VIPs, etc.
Linguistics: +10 (3 ranks)
Perception: +8 (3 ranks)
Sense Motive: +9 (3 ranks)
All other Cha skills are +6, all other non-Cha skills are stat modifier.