Some versions of Internet Explorer display a bug whereby some objects need to be clicked to activate, before they will work.
Here is a fix for that problem.
Add this code into your page before the ending body (</body>) tag.
<script type="text/javascript" src="iefix.js"></script>
Then download this zip file, extract it (iefix.js) and put it in the same folder as your page.
IEfix.zip
If your server supports PHP and you want a simple and secure script that requires very little setup.
Then download this file
Easy PHP form mail processing script
If your server does NOT support PHP
Then download formmail
Visit the formmail site for help setting up formmail.
Usually your hosting provider would have a help area with an explanation of how to use formmail.