I've been trying to find it all morning. I think the tag begins with an "i" though I could be wrong.

It's really kind of sad that I was too scared of being called a retard to post this kind of thing to askmefi.

iframe?

You could use SHTML markup (tutorial) to call a file that contains the footer HTML. Since the footer is in a separate file, you just edit this file when you need to, and if all your pages use SHTML, they'll render with the updated footer.

Another option if you have PHP available to you is store your values in an key-value array (e.g. $phone_numbers[]) in an include file, e.g. phone_numbers.inc.

Then use require_once() to add the phone_numbers.inc file in the header of all of your pages.

In your footer, you'd call something like <?php echo $phone_number['tech_support']; ?> to add the technical support phone number to your footer.

Well if you saved the phone number as an gif, you could use the IMG tag globally. ;)

Well, it's actually a calendar that has hyperlinked days that link to correspondence that have gone out that day. I would rather not be updating the calendar on every page. I'll look into the frames and the shtml options. Thanks, guys!

If you have SSI (server-side includes) available then you can do something like this:

<!--#include file="phonenumber.txt" -->

If your server has php (which it almost certainly does), you can use an include - this is a really easy way for dummies like me to do this, so it should be a piece of cake for you. See here.