Website builder

I recently started making my own website. It is through Yahoo! Small Business actually, and I use html to create the pages (not Site Solution, Page Builder, etc.). However, whenever I make updates to any of the pages, and go to that page, the updates don’t take effect unless I press the refresh button. Most potential clients will not be just pressing the refresh button, and will not see my updates, and that will cost me business. I have looked this up all over the internet and found two options…

1. I used this code. First in the header, then in the body, since it gave no specifications:

This code did not work at all.

2. I also found this code, to clear a users cache:

This worked, as it got the updates, but it took forever for the pages to load, and it screwed up the pages for some browsers. Both of those things can also drive away customers.

So basically, I need a code that will get pages to automatically refresh or update upon each visit.

Thanks,
Alec