Ok I recently installed the Arduino 0022 on my vista ultimate desktop and it worked fine for the first time no problems but the next day after I shut my computer down the Arduino would not sync at all, windows found it and said it was on com 3 so in the Arduino program I checked com 3 everything was right but I still got the avr dude not in sync code. I have it installed on my laptop with xp and works great. Any ideas would be great. Thanks
With the arduino connected to the computer, in the arduino IDE, go to tools > serial port and see if there is another serial port to select besides com 3. Com 3 is often an internal modem.