Two men play an Air Hockey game on a Touchmaster device by Art + Com Technologies on the fairgrounds in Hanover, central Germany, where preparations are under way March 1, 2009 for the world's biggest high-tech fair CeBIT. The fair will be opened by German Chancellor Angela Merkel and California governor Arnold Schwarzenegger on March 2, 2009 and is running until March 8, 2009. Some 4,300 firms from 69 countries will display the latest in information and communications technology, a quarter fewer than last year due to the global economic slump, organisers said. AFP PHOTO DDP/NIGEL TREBLIN GERMANY OUT (Photo credit should read NIGEL TREBLIN/AFP/Getty Images)