CompuServe Messages

We are having difficulties with our DOS apps running under Windows for Workgroups 3.11. The basic environment is : Netware 3.11, WFW 3.11, NDIS drivers disabled under WFW. We are not using any of the Microsoft Windows network features due to an incompatability with Novell's NACs. The NDIS and SPX drivers have some troubles with each other. We were running fine until we tried installing Novell's Lan Workgroup TCP/IP driver. Several users are thrown out of their DOS apps regularly. Our accounting system, which is DOS based, is the main culprit. The technical support reps for that system says that the error messages that we get indicate a temporary loss of connection, or at least a fluxuation in the connection. Any ideas? Thanks in advance for the assistance.