Problem in Downloading Profile needed in some cases to access the Internet through Wifi

I have an Iphone 4 and Ipad 3. I access the Internet in my hostel with the wifi router. When connected iphone with wifi , It automatically downloads profile needed to run internet. but in case of Ipad 3 , it does not and i am unable to access internet. So Please give me solutions so that i can Access net on my Ipad 3