How do you send and recieve info from serial ports?

I am writing a program that needs to recieve information from a serial port. I have never had experience with such a thing. Any help/information on this topic would be greatly appreciated.

Thanks,

Joe

Depending on what platform are you doing this, there is much information on the internet. Search with Google would give you many pages:
http://www.google.com/search?q=serial+port+programming

I assume it's something from Microsoft. If it's DOS, io.h I'm sure has something. I read about it a while ago - I think the resources from cprn() inherited their code from it.