Yeah i've tried that a couple of times to no avail. Like I say it used to be working fine, and now it's just stopped for no reason (the best reason i can think of it 12.1.3, when did that come out). The syncing to sync services does work, because I can sync to my phone using iSync etc. I just don't see anything in iCal or Organized.
If it's syncing to Sync Services, it is syncing to iCal. Make sure that you have the calendar named "Entourage" selected to display in iCal.
I'm going to go off on a tangent and explain a bit about how all of this works. Any application that hooks into Sync Services writes data to a database called the Truth. Entourage reads from and writes to the Truth, as does iCal. (There's a more in-depth discussion of this over on the Entourage MVP page, written by one of the members of the Entourage team: Sync Services basics.) So if something is syncing to Sync Services, that's the same thing as syncing to iCal.
If you continue having problems seeing the Entourage calendar in iCal, you're probably getting over my head. You might want to check out the Entourage public forums -- the Entourage MVPs monitor that group, and they're a great group of people who are hugely knowledgeable. I'm not an iCal expert, so I don't want to lead you astray.
Regards,
Nadyne.