Hi, i am running Exchange 5.5 sp4 on Winnt 4.0 sp6a. I have installed Outlook Web Access5.5 sp4 on a Windows2000 machine. Can I install Outlook Web Access 2000 (From the CD of Exchange server 2000) and that can communicate with exchange 5.5. If Yes, then how to do it. <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /> Regards, Chand Deshwal (M.Tech CS&E, MCSE, CCNA) Network Administrator Kampsax India Ltd., Gurgaon ph: +91 124 6348259-62, Extn. 712 chand@xxxxxxxxxxxxxxxxx <mailto:chand@xxxxxxxxxxxxxxxxx> http://www.kampsaxindia.com <http://www.kampsaxindia.com/>