If one is trying to test locators for/within IE, here's some useful info to know. You can query locators like with Firebug/FirePath in IE, and across other browsers too in a cross platform generic way, but it's most hassle-prone for IE due to lack of XPath support, if you were to want to test for XPath locators in IE.
but if you have a Selenium (Python) interpreter session already as Kevin shown, you can just do the test through that with browser being IE and skip all the prep work mentioned in my blog post. That post is more about tesitng outside of Selenium.
I tend to like to test locators first within browser, then may do a 2nd pass along with actual Selenium command (click/type, etc.) in an interpreter shell like Python. Though I don't use it with RF & Selenium2Library in a shell, just plain Python bindings for Selenium.