I have officially given up on Internet Explorer as my preferred browser and now exclusively use FireFox!
Since moving over to FireFox I have discovered the wonderful world of AddOns that FireFox has to offer. If you are an avid user of GMail you will love the Better GMail addon. It is basically a superset of some awesome GreaseMonkey scripts that make GMail a little more streamlined if you can believe that.
One of the features that Better GMail adds is a folder structure for your labels that I have been craving for quiet sometime. The difficult part and the inspiration for this post are that you wont find any documentation on how to enable it. If you follow this link it should make things much easier.