Hi,
This is easy for me, i just need to check your code for the contact form to answer your query. I have numerous expereinces with custom PHP and developing all kinds of forms, so I'm capable of providing you quality service. Please checkout my portfolio and come to chat with me, so that I can have a look at your contact form.
Portfolio;
http://www.freelancer.com/u/evsoftpk.html
Regards,
OZS