If anyone needs a little metar/taf gadget for the Vista sidebar, I've just updated my one to v1.2. Works much faster now, and no hanging as with the previous version (whoops!) - shows the Metar for an ICAO code (where they're availiable from the NOAA), and can flip between metar and taf every three minutes if need be. Clicking on the gadget pops out the forecast page for that code from WeatherUnderground.
Its on the sidebar gallery (although MS haven't updated it to the latest version just yet - still pending!), or you can get it directly from:
http://www.slopey.com/download/PUBLIC/Metar.gadget
Hope it's of some use!
Cheers,
S.