I uninstalled IE7 Beta 3 and it did correct the problem. Now I am only getting temporary access as it is telling me that I need to go to install required software updates (from Microsoft), even though there are no critical updates for me to download.
CCA does indeed support other browsers, but IE7 reports itself as IE, but doesn't behave like the others (I can't be specific, as I don't know what the difference is, but it's sufficient to cause the errors you're receiving). Perhaps by the time it's released the behavior will be corrected either by the agent or the browser. I certainly hope it is, or the beginning of the semester will be difficult for many help desks!
Regarding the patches, you may need to re-register some .dll's, or just download a patch from the MS technet site and install it manually, assuming that CCA is telling you which updates it thinks you're missing. If you don't get that info, call your help desk, and they should be able to find someone to check the report for which KB# you need. Once you've got that, downloading it manually will resolve the issue.
If you'd rather try the quick fix (which comes with no warranty or personal testing), you can run the attached batch file; it should re-register some DLLs and that sometimes resolves the issue with Windows Updates not being detected consistently.
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