A detente between longtime rivals Microsoft and Sun Microsystems has resulted in more money changing hands and soon will produce more details on the companies' cooperative work. Microsoft paid $54 million to extend a patent sharing agreement by one year, the server maker said on Thursday while reporting quarterly financial results. The payment was the first installment of a possible $450 million Sun could gain if Microsoft chooses to keep paying for nine more years. In a dramatic turnaround, Sun and Microsoft announced the patent agreement a year ago, and also settled a long-running lawsuit over Sun's Java software. The companies also agreed to cooperate on making their products work better together. So far, however, that collaboration hasn't had many externally visible results. On Thursday, Sun Chief Executive Scott McNealy said a public update on the cooperation is in the works. "We're planning on more updates in mid-May between the two companies," McNealy said in a conference call.