For those too lazy to learn PHP, such as myself, here is a tutorial on iFrames.

Here is the iFrame code:
<iframe FRAMEBORDER="0" width=430px height=2500px src="main.htm" background-color="transparent" allowtransparency="true" name="Main" style="position:absolute; left:173px; top:566px; border: 0px solid none;"> </iframe>

You will need to change anything in quotation marks to suit your iFrame needs. Width and height obviously control the dimensions of your iFrame box; the left and top place your iframe. Remove the "background-color:transparent" and the "allowtransparency="true" if you do not wish to have a transparent iframe.

See where it says src?

src="main.htm"

What do you want to show up in your iFrame? For my site, my blog appears first. If you want your blog page to appear first, and you named your blog page "blog.htm" then change src="main.htm" into src="blog.htm."

name="Main"

How do you get other pages to show in your iFrame box? First, you need to name your iFrame. I named mine "Main." Say you want the page, "graphics.htm" to appear. Link to it like this:
<a href="graphics.htm" Target="Main">Graphics</a>

Whatever the name of the iframe is, you put that in the Target.