By Yael T. Abouhalkah, Kansas City Star Editorial Page columnist

Sarah Palin served notice Friday morning that she will be one charming but tough cookie on the campaign trail as John McCain's running mate.

Plenty of Americans won't agree with Palin's strongly conservative views. But -- wow -- she just scored big-time with a high-energy speech in her first appeareance with McCain.

She hit all the right notes.

-- She said she's a change agent, which is a direct hit at the Barack Obama campaign for the Democrats.

-- She made the obvious point that she's a woman -- with a gracious nod to Hillary Clinton and other women who came before her -- ready to break the "glass ceiling" in Washington.

-- And she was quite good in making sure she paid the right amount of attention to McCain who, after all, is the far more important person on the GOP's ticket.

Sarah Palin was a great, upbeat choice for McCain, at least for campaign purposes.

What kind of vice president would she be? That's a story that will be carved out in days to come.