Form Post Method Problem

Hi Guys

i am new at wordpress, i have made a form in sidebar of my wordpress site to get users information at my email address and also in my database, and i create a page named process in using wordpress and made different template for it i want to get the posted data on my form on that page but when i fill the form and submit then it redirects to 404 page and if i don’t submit any data then it works well i only get select menu (drop down menu) value and hidden value . can somebody help me whats the matter i tried using both methods Get and Post. Please help me.
thanks in advance

i have uploaded it specially at
http://e-quranlearning.com