I am not sure which version of the controls you are using, as a workaround for some of IE9's incompatibilities is possible for Q3 2010. You can examine this forum thread
for more information.
This may not work for you, depending on the version you are having, therefore it is quite possible that the only option to support IE9 (and other newer browsers) is to upgrade (I would advise to the latest version, which currently is Q2 2011 SP1).
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