There is a good thread at Cre8asite forums named How do I get a press release listed in Google News. In the thread, members provide useful tips on how and when to get your news syndicated by Google News. A while back I wrote an entry named Press Releases & Search Engine Optimization which tocuhes on this topic.
There are many services that can get you into Google News, one such service is PR Web. The thread linked to above has some nice suggestions as well. Here is one quote about timing your press release:
The timing of when you send out a press release can be very important, too. If at all possible, try to send yours out so that it gets submitted into Google news in the morning, rather than the evening, in the area where your largest targeted audience might reside.
Chances are very good that it will get many more views that way. Google news can cycle through stories pretty quickly and a lot of people "sort by date".
