Hi How do I find out which aips user IDs I have already assigned, or which ones are free. Thanks Roderick -- Roderick Johnstone Email: rmj at ast.cam.ac.uk X-ray Astronomy Group Phone: +44 (0)1223 766656 Institute of Astronomy Mobile:+44 (0)7989 809095 Madingley Road, Cambridge CB3 0HA, UK Fax: +44 (0)1223 337523