[Plugin: Custom Contact Forms] Removing underscores from field name value

Is there a way to remove the underscores from the field name values? For example if I create a form input field like this:
<input type=”text” name=”First Name” />

it comes up like this in the front end:
<input type=”text” name=”First_Name” />

I simply want to remove the underscores from the name attribute. Is this possible?

Thanks

http://wordpress.org/extend/plugins/custom-contact-forms/