Dr. Bolstad, I have downloaded and installed RMAexpress, I am using Windows XP so I have downloaded JAVA 1.5 and MDAC 2.7, and I have downloaded the cdf files for the Affy chips I use. I have tried to use converted files (.RMA), but I get the error message that the files contain no cdf info. However, when I try to point RMAconversion to the cdf files nothing shows up. Thanks for any advice you can offer. John John W Peterson, Ph.D. The Lerner Research Institute, Dept. of Neurosciences, NC30 The Cleveland Clinic Foundation 9500 Euclid Avenue Cleveland, Ohio 44195 Phone: (216) 444-8712 Fax: (216) 444-7927 ------------------------------------------------------------------------------ Confidentiality Note: This message is intended for use only by the individual or entity to which it is addressed and may contain information that is privileged, confidential, and exempt from disclosure under applicable law. If the reader of this message is not the intended recipient or the employee or agent responsible for delivering the message to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please contact the sender immediately and destroy the material in its entirety, whether electronic or hard copy. Thank you. ------------ Visit us online at our award-winning http://www.clevelandclinic.org for a complete listing of Cleveland Clinic services, staff and locations from one of the country's leading hospitals. ==============================================================================