Check out this page in Firefox or Chrome:

http://minorityrecruitonline-com.si-.../Default1.aspx

Now check out the same page in IE8. I have tried everything to get them to appear the same in both browsers, but no can do.

Any ideas from any HTML gurus out there?

I have looked at your site in IE8 and Firefox and the first thing I would say is that you need to get a grip of your coding.
You are using a XHTML Doctype. First be aware that XHTML requires all lower case and you need to use the correct tags. For instance to declare margins the correct form is: margin-left:0.
For a complete run down of your errors use the validator at: http://validator.w3.org/