Trying to learn about computers myself (on a daily basis!!), sometimes my biggest challenge was know what questions to ask. Or, when asking a question, I would find that there was terminology that I didn't know that would have helped me phrase the question better. (What I don't know has never scared me. I can learn. It's what I don't know that I don't know
that causes me the most trouble!)
Not knowing your skill level, please forgive me if the following advice is "preaching to the choir" as the old saying goes!
What you are trying to research is, if I'm not mistaken, called an "Email Client
" (why? I don't know. I call it an email program unless I need help with it). I would suggest trying a Google search, such as: "How do I get IE8 to recognize XXXXX
" (Of course, where XXXXX
is the name of the email client you are trying to use).
Be careful selecting the results from Google and only select websites you are familiar with or ones that someone else knows is secure (like the folks here!). Obviously, the support sites belonging to Microsoft are usually safe (bloated, but safe). I've had some success with (I hope this is right) ehow.com and about.com without running into security risks.
Another Google search might be: "IE8 will not recognize email client"
Finally, If you would post the name of the email program (client) you are trying to use back here, someone here may have a more direct answer for you.