Jennifer Garner wants to use her fame to make a positive difference in the world.

The actress - who is married to Hollywood hunk Ben Affleck - accepts her celebrity status and the attention that goes with it and she is determined to use her profile to help charities and do good deeds.

She said: "My view on fame? In the film business, you have perks beyond your dreams. You can make a sick child smile and raise money for charity, just by being well known ... I also strongly believe in treating people well, whatever their job and whatever happens. I think good manners are important."

Jennifer - who has two daughters, six-year-old Violet and three-year-old Seraphina, with Ben - accepts there are negative aspects to being an actress but she insists The Benefits far outweigh the drawbacks.

The 39-year-old star - who is currently pregnant - added: "The flipside is that you can lose the illusion of having a private and personal life and your family is intruded upon. But don't complain - the good outweighs the bad."