WinNT has essentially the same TCP/IP stack as 95/98. What might affect things are: DUN upgrades to 95 (which change MTU settings), and the differences in file locking. Also, 95 has had a number of vredir.vxd "upgrades". Try a newer version, or maybe an old one. Some of the NT guys (or rather, NT guys who have battled these problems) might be able to point you at NT specific fixes. I suspect a file oplocking issue. Ed -- Edward Schernau http://www.schernau.com Network Architect mailto:ed@schernau.com Rational Computing Providence, RI, USA