Simple PHP Question

I recently followed and was able to understand your simple contact form tutorial using HTML and PHP (found at the following link). **

http://www.kirupa.com/web/php_contact_form.htm**

Furthermore, I was able to get the form to work properly once uploaded to my server. I am just curious about one particular thing, when I received the contact form in my email inbox, the sender appears as an odd collection of letters from my hosting site. Is there anyway to change the sender or set a value so that the sender comes up as “Feedback Form” or something like that in my inbox?

Thanks for your help!

-Sayer