How to share the public folder?

My PC is connected to a home wireless network and there are two more computers in the same network (a mac and a pc). I want to share the public folder so I can exchange files between computers by writing them to the public folder. But still I want to make sure that only the public folder is shared and nothing else of my computer can be accessible by another computer in the wireless network. Need your help.

Thanks.

This link should give you the brief overview of the process.
Sharing files with the Public folder
The public folder is 'public' by default however access can also be restricted as required. The link above explains that too. And if you haven't changed any other settings, the other folders should be safe and unshared.

Hope that helps !

Azo gave you good advice. My experience with sharing is that once you turn it on, only the Public folders are accessible. Sharing anything else takes a little more effort. I would test this by turning on the sharing and then having a look at what other computers on the network are able to see on your computer. Going into the "Advanced Sharing" options lets you fine tune things a little more,