Selenium does not have an IDE for Internet Explorer (any version). I haven't seen any under development either. You can check their http://clearspace.openqa.org/community/selenium/http://seleniumhq.org/ for updates but I their primary focus is FireFox for the IDE.
Selenium can run tests in Internet Explorer (including IE6) using the http://seleniumhq.org/projects/remote-control/. You can record tests with the IDE in FireFox (or write tests in http://seleniumhq.org/about/platforms.html) and then use SeleniumRC to launch IE and run the tests.
For Internet Explorer IDEs similar to what Selenium gives in FireFox, check out http://watin.sourceforge.net/