Ok, I changed the zip file, download it again
my demo form site
it now contains an index, form and thank you page
extract it to a folder on your computer called testform
and then edit the contact.phm file to change the email address.
upload to your site to a folder called testform, here is (mine)
then goto that folder on your site and you will see a page with a link to the form,
and after you fill out the form you will see a thank you page.
Try this, to get it working, then modify.
hope this helps.