I have bought a machine with Win XP Pro installed (NTFS file system 40gb hard disk) and loaded MS Office 2000. All worked well for some weeks until I downloaded and installed Office SP1 and Office SR3. Now Outlook and other office applications do not work properly. They appear properly on the screen for a few seconds and then disappear. Only Access seems ok! I have tried to load from shortcuts and through 'programs' but nothing works. I have reinstalled Office but no change.In case it was a Win XP fault I reinstalled this but still no joy. I would like to reinstall everything onto a clean disk but do not seem able to format. Would appreciate any help please.