I am running Win98. The PC in logged into a Novell 4.11 network, Lotus notes using TCPIP and a second AS 400 using Client Access (TCPIP). When attaching or detaching files the PC locks up. The window showing the available drives never opens up. The only thing that works is the mouse pointer and CTRL-ALT-DEL which brings up the task menu but will not access an additional input from the mouse. The PC has multiple drives mapped incl one on the AS 400. Rebooting the PC will not clear the problem. Any assistance would be greatly appreciated.