I have a Vista machine but am sure that my query will be relevant to XP and perhaps Win 7 users. Most of the periodic "mass Tuesday updates" are about downloads directed at the operating system itself, e.g., Vista patches, Windows Defender, Security Packs. However, other Microsoft programs do sometimes feature. Last Tuesday's batch, for example, contained patch KB972581 for Microsoft Office 2007. I am still using Office 2003 but have 2007 on CD which I am about to install. Will the patch already on my hard drive work OK or will I have to download the patch again? This is a specific example but there will be others in future or members may likewise experience them. David Alleston ==========================< U3A Aylesbury Vale> ======================