IIS 6 Compatibility should not be required. To help resolve your issue, can you please do two things for us?
1) Run the installer from a command line using the following command:
msiexec /i [Installer Path] /L*v c:\teampulseLog.txt
2) When you reach the screen of the installer where it informs you that you are not meeting the requirements, please capture a screenshot and attach it along with the contents of the teampulseLog.txt file output.
We should be able to get a good handle on what is tripping you up with the information gleaned from the above process.
the Telerik team
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