WOW *O* HDR huh? Sounds awesome, certainly looks like you\'ve captured heaps of awesome details here. *O* I love the trees! And the stormy sky in contrast to a peaceful+quiet sort of town looks kinda ominous/cool at the same time. XD Yesssss DO YOUR BEST! +__+
HDR is a pretty new thing for digital photography. It means High Dynamic Range. Dynamic Range in a photo is basically the range of tones it has, from shadows to highlights. In this technique, you combine 3 or so photos together to increase the tonal range. Each photo is shot at different settings though.
For example, you might have one underexposed (darker than usual - to get highlight detail), a regular shot, and an overexposed shot (lighter than usual, to get shadow detail). Combine these and all the extra information you got from the shots is compressed into one new image, showing details that are impossible to capture with just one shot (unless you\'re Ansel Adams (you may not know him, but he was a legendary photographer who\'s techniques still surpass pretty much anyone and any technology today))