1. Information Systems Evaluation and Integration Group (ISEIG), Department of Information Systems and ComputingInformation Systems Evaluation and Integration Group (ISEIG), Brunel University UB8 3PH Uxbridge, Middlesex UK
2. KPMG Consulting, 8 Salisbury Square EC4Y 8BB London UK
3. School of Architecture and Building, Deakin University, Geelong Victoria Australia