<<Is there an update for Windows 95 to make COM3 and COM4 functionally equivalent to COM1 and COM2 serial ports?>> Could you clarify what this means? As far as I know, COM3/4 work just fine; in fact, the machine I'm typing on is talking to CIS even as we speak, using a modem configured as COM3 on IRQ 11. There is video hardware out there that has a conflict with the standard COM4 I/O address of 0x2E8 (ATI, S3, anything claiming 8514/A hardware compatibility), but that's a hardware issue, unrelated to the OS. Steve Dirickson WestWin Consulting (360) 598-6111 [log in to unmask]