Selenium does not have an IDE for Internet Explorer (any version). I haven’t seen any under development either. You can check their boards/site for updates but I their primary focus is FireFox for the IDE.
Selenium can run tests in Internet Explorer (including IE6) using the SeleniumRC. You can record tests with the IDE in FireFox (or write tests in whatever language they support) and then use SeleniumRC to launch IE and run the tests.
For Internet Explorer IDEs similar to what Selenium gives in FireFox, check out WatiN