Gov. Arnold Schwarzenegger insisted Wednesday that the direction of his administration won't change with the appointment of Democrat Susan Kennedy, a top aide to former Gov. Gray Davis, as his new chief of staff. Introducing Kennedy at a 2 p.m. Capitol news conference, Schwarzenegger said he got to know Kennedy over the last two years through her job as a Davis appointee to the Public Utilities Commission. After considering various candidates, the Republican governor said, he concluded she's willing to put her "Democratic philosophy aside" and "implement my vision." "The one I came back to over and over again...