What is the yellow space craft in star wars which has C3PO in the back and i think luke skywalker drives it?

Luke does indeed drive it, in Star Wars: A New Hope on tatooine,
it is in fact a X-34 Landspeeder as shown here
http://www.krunker.com/wp-content/uploads/2008/02/landspeeder.jpg
More info on the link below
Star Wars Connections/Flashback with C3PO and R2D2

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keira nightley ever played princess leia character in star wars?

No BUT look closely in the credits. Her name is there as one of Queen Amaidala’s guards or something. Or it might have been that other Queens.
Princess Leia Slave Star Wars Costume

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Can you give me some links to buy a Star Wars lunchbox?

Yep, I like the one below!
star wars lunch box review

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Toys Lego Star Wars … are the best gifts in the world?
For the fan of Star Wars and Lego, the manufacturer popular for children, Lego has ever produced popular Lego toy Star Wars series. The target = "_blank"> Lego Star Wars series has been available for over a decade and growing [...]

Star Wars: The franchise that can never disappear
Long ago in a galaxy far, far away, was the little science fiction film could "Star Wars Episode IV: A New Hope." At that time, however, was known simply as Star Wars, and created a franchise than ever before.
In 2005, Forbes magazine estimated [...]

Old Star Wars Miniatures – what they are?
Even if you were not a big fan of the Star Wars movies, you probably had time to Play vintage Star Wars figures. After all – Star Wars dominated part of the science fiction of the late 1970s, and demand for these figures Action continues today.
With the popularity [...]