Totally upgrade to the max. Get IE7. It's 100 times better than IE6. Not as great as Firefox, but hey I mean there is no reason to use IE6 except for if you want your computer to die badly, so you might as well strike it from your computer with a much better program.
Also, whaaaaaa Konami why did you acquire In The Groove. Good thing all ITG2 cabinets are basically Stepmania cabinets now due to the latest update!