Thanks for all the help. I have done a search for the .wab and found it in the Documents and settings folder however there is no data in it? In the meantime I have got my Outlook addresses back again by doing a "Detect and Repair - reset and restoring from a backup cd" through the Outlook Help menu which seems to have sorted it out. I am just wondering now why there is no data in my address book file but my Outlook addresses are back in place?
Running Win XP Pro.