Configuring serial ports

[Alec Smith <alec@shadowstar.net>]

I'm trying to set up an Apple LaserWriter IINT to run off a PC. So far I 
have the DB9-DB25 cable and null modem connected. However, I'm having some 
trouble getting the serial port configured. As I understand the Apple 
documentation, I need

- XON/XOFF handshake
- 9600 baud
- no parity
- 7 data bits
- 1 stop bit

How can I configure Debian to use these settings on /dev/ttyS0?

Thanks!