Thanks for the advice. David
Thank you guys, i spoke with somebody in MS in the end and he told me that there were several possibilities. I lost most of the day with it , so in the end binned the machine and did a reinstall . Ill be much more carefull with IIS now carefully deciding what ISAPI´s etc. to install ( which i believe are the culprit and in effect knocked over the document indexing )
Thanks for the advice.