Hi friends, I've downloaded and installed successfully Service Pack 3 and it works properly on my XP Pro Machine. I also suggest to analyze whether you need to defrag your computer or not. It's because this Pack 3 is a file of 316 MB about. HTH Moti Moti Azrad Musician & Piano Tuner motia@xxxxxxx motiaz@xxxxxxxxx azrad_moty@xxxxxxxxxxx Israel