Hi,
It can be placed in any widget area. For example, many StudioPress themes include a “Header Right” widget area—it could be placed there.
Other users have had success with 1shoppingcart with settings similar to this. You would need to customize this based on the html code provided by 1shoppingcart:
Form Action: https://www.mcssl.com/app/contactsave.asp
E-mail Field: Email1
First Name: Name
[leave Last Name blank]
Hidden:
<input name="merchantid" type="hidden" id="merchantid" value="INSERT YOUR NUMBER HERE">
<input name="ARThankyouURL" type="hidden" id="ARThankyouURL" value="https://YOUR-THANK-YOU-PAGE-ADDRESS">
<input name="copyarresponse" type="hidden" id="copyarresponse" value="1">
<input name="defaultar" type="hidden" id="defaultar" value="your own value">
<input name="allowmulti" type="hidden" id="allowmulti" value="0">
<input name="visiblefields" type="hidden" id="visiblefields" value="Name,Email1">
<input name="requiredfields" type="hidden" id="requiredfields" value="Name,Email1">