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Update: Mozilla Firefox is now the recommended browser for Orlando Memory. Internet Explorer users will still have access to the site, but we have found that OM runs best on Firefox.

Here is a basic tutorial describing the differences between Internet Explorer and Firefox:
http://breeze.ocls.info/p54424934.

The Mozilla site has an excellent step-by-step guide for installing Firefox on Windows:
http://support.mozilla.com/en-US/kb/Installing+Firefox+on+Windows.