Everything was an option on those devices.
If you have a device capable of scanning, the directions would be here.
For any feature you don't have, there is a hardware and an enablement key, so you can't just add a feature at will.
In all honesty, it would not be worth adding any of them anyway, the device is just too old.
It couldn't use SSL/TLS, so almost every SMTP server won't work, you would need a relay setup to use pretty much any server.
Scan to PC won't work on anything that uses SMB2-3, so that omits scan to Windows Vista (Probably) and newer.
It would be a better option to get an old bubblejet, networkable printer that is out of ink to use as a scanner than it would be to get a WC232 up and running. People often just dispose of ink based printers as soon as they run out of ink since a new printer costs less than the ink to put in one usually.