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Are you uploading panoramas from the iPhone app or are you using the Windows app?
If you could tell me what your username is on http://photosynth.net I can look and see whether your synths or panos have been geotagged yet or not.
If they came from the phone app they're already geotagged and I'll be happy to show you the links on Bing Maps.
One other possibility is that if you have kept your uploads private (Photosynth calls this Unlisted) your synths and panos won't be shown on Bing Maps, in search results, or even on your Photosynth profile page, unless you are signed into your own account.
Again, if you don't mind telling me what your Photosynth username is, then I can give more specific instructions.