Delay in page changes being seen

[nickreynolds]

I have a small site that makes a small profit. It is a directory for professional driving instructors. They can get a free listing or pay for an enhanced listing. I use Dreamweaver and just html - no cgi or php or anything. I have sometimes found that when I put someones entry on the site I email to tell them I've uploaded it and they contact me to say it's not on the site. I check and it is and then they check and say it still isn't. Then a few hours later they say it is on the site.
How is it that when I view the site, entering the url in the browser as normal, I see the changes but the other person still gets the old version of the page?

[txbakers]

look up "cache" and you'll see what's going on.

and WELCOME to the webmaster world forums! Glad to have you posting here.

[nickreynolds]

Hi
Don't want to be a time waster, but where do you want me to look up "cache"? The sitesearch is not working and searching via google isn't helping - I'm just not sure what I'm looking for! Anyway, you might be able to give me a quick yes or no. I thought it might be something to do with a cache, but not sure where the cache is.
Is it to do with their computer?
Is it to do with their browser?
Is it to do with my server?
Is there anything I can do about it?
Thanks in anticipation

[txbakers]

Yep, most likely it's on their computer. Static HTML pages get stored on their local computer and are retrieved for quick access.

You can add a meta tag to your pages which will force them NOT to cache.

<meta http-equiv="Pragma" content="no-cache">

This is what I used to use, I'm not sure if it is still valid.

[nickreynolds]

Excellent - thanks for the help