Here is the problem again, reworded.
I have a page called enter.htm and links on that page link to MainIndex.htm.
MainIndex.htm has a frame called I1.
I have another page called contact.htm
When I click on a the contact link on the enter.htm page. I want the MainIndex.htm page to pop up with the contact.htm page in the I1 frame.
Hope this is a little clearer.
Here is the definition of the I1 frame in MainIndex.htm
<iframe name="I1" align="top" border="0" frameborder="0" width="100%" height="100%" src="home.htm">
Your browser does not support inline frames or is currently configured not to display inline frames.
</iframe></td>