I heard this mentioned on the WGN news last night and I have not seen it posted here (and if it was and I missed it, I figured a new post would help people find this easier). WGN will rebroadcast the Zambrano no-hitter on Friday at 10 PM. They said it will be on both WGN locally and the Superstation. With this advance notice, everyone will now have a chance to set their DVR's to capture this game for posterity.
See my Pictures of the 2008 Cubs at http://ignarski.tripod.com/cub-pics-2008.html
Also, see the Cubs 2008 schedule with game results and TV schedule at http://ignarski.tripod.com/sched2008.html