add or edit (if they are already there) the following lines: Stacks=0,0 Files=80 Fcbs=1,0 Buffers=50,0 Stacks=0,0 Sets the amount of data stacks to handle hardware interrupts. Files=80 Sets the # of files the dos can access at once. Fcbs=1,0 Sets the # of file control blocks (Fcbs) that the dos can have open at once. Buffers=50,0 Sets the # of disk buffers available to the dos. These settings pretty much affect DOS and not really windows.