instructions hover to right hand side.

You could do something simple with a couple of CSS rules. Basically you set the visibility of the description to hidden to begin with, then when you hover over the containing list item, show the description.

This should give you the idea. You can tweak it from there.

body .gform_wrapper .gform_body .gform_fields .gfield .gfield_description {
    color: #790000;
    visibility: hidden;
}

body .gform_wrapper .gform_body .gform_fields .gfield:hover .gfield_description {
    visibility: visible;
    float: right;
}

You would use CSS to set the font style for that element by adding additional CSS to the code Kevin provided you above.

For example:

body .gform_wrapper .gform_body .gform_fields .gfield .gfield_description {
    color: #790000;
    visibility: hidden;
    font-size: 14px;
}

That would apply a 14px font size to the text within the .gfield_description element.

If you aren't familiar with CSS you may want to check out this resource site:

http://www.w3schools.com/css/default.asp

If you are going to be customizing things via CSS you will want to be sure you are doing things properly. Customizations are just that, customizations. So we can help you with simple things but ultimately if it's a customization you will have to write the code and implement it.

@ethomit You could possibly do this by adding a background-image containing your question mark image to your custom CSS for the description as outlined in the post above. Then use CSS to position the content of that div so it doesn't overlap the background image.