Refreshing Data

Hello All...

I am new to this board and I am really an accidental webmaster. I am currently developing and for lack of resources, maintaining the sites I am on. I am a designer by trade and the only reasons I can maintain the sites I am on (both for non-profit groups, BTW, of which I am part of both) is because they currently do not require the use of any real scripting or data base management. However, that is changing quickly and I will soon be overseeing a programmer that wil help us out there.

In the meantime, I have a question that might seem to be out of ignorance or extremely basic in nature but it is the first problem I have encountered as we are getting ready to get these sites live.

Is there a way to force browsers to reload data whenever they revisit the site? I am not talking about constant updating during a single session, but about having the browser refresh files as they are revisited...We have content that is changing or being added to on a weekly basis and already I am seeing reports of things that have long since been changed and updated.

Thanks.

-Mike Chung