Is there a way to force IE or FF into a handheld mode for testing “@media handheld” stylesheets?

Question

Is there a way to force IE or FF into a handheld mode for testing \"@media handheld\" stylesheets?

Or, do I have to publish the pages and test with my Blackberry?

Answer 1

Some help on this question: What do you use to test the handheld css on your website?