I still have Vista on my notebook PC, it works fine for what I want and I liked the weather gadget that was in the side bar. If you dragged the gadget out of the sidbar it grew bigger and and gave you a forecast for 5 days. This weather gadget worked well I thought and I had no need to update it.
We recently got a HTC Desire mobile phone and the sense interface is great. The front scree with the clock and weather looks fantastic. I have found a Windows version of this Clock/Weather gadget. It is called HTC Home. It workd well, doesn’t slow my PC and looks just as good as on our HTC Desire. The animations look pretty but I wish they didn’t animate quite so long, 5 seconds would be plenty.
I did find that although you have a choice of two places it can get it’s weather information from – Accuweather and MSN – one was not very accurate, strangely it’s name suggests it is accurate. Remember I am in Australia so maybe they are better in the US, MSN seems fine. Give it a try and see what you think www.htchome.org/en/
goldcoaster 
i’d love to have 1