my page is located at http://www.equusdev.com/
for some odd reason, IE has taken it upon itself to insert what appears to be a line break inbetween the top heading and the main body... any thoughts or tips?

Well first of all your navbar is encased in a table that has 1 row and 1 cell. If you EVER have a table with 1 row and 1 cell in your code, immediately replace it with a div or something because why have a table when there's just one cell? No point, it clutters up your code, makes your page load slower, etc etc

Replace the <table cellpadding="0" cellspacing="0"><tr><td align="right"> with:

<div style="text-align:right;padding-right:30px;">

And replace the </td><td style="width:30px"></td></tr></table> with:

</div>

Even better would be to apply that formatting to the "homelinkbar" div id in your css file, and replace the table with nothing.

Do that and then see if IE and Firefox still display differently.

i actually had it as a div and i had the same problem in addition to a positioning problem. IE decide it would add space to the right margin

I don't have access to IE at the moment, but I was having a similar problem earlier with a page I was working on. Try adding dispaly:block to your header.