I have one Acer T180 that ran Vista. I bought a OEM copy of XP Pro and installed it and have had some troubles. As usual, I had trouble with the onboard sound but I downloaded drivers from Acer and that is fixed. It was good to hear that Windows Start up song ! But I still have a problem with SEARCH and Windows Media Player. It says it can't find a COMPATIBLE DVD DECODER. Any suggestions about the SEARCH or DECODER?