need php.ini and paypal ipn help

Hello, I need some help editing my [login to view URL] file on a Godaddy dedicated server. I need to increase my file size upload limits (memory, file size and time) I also need help setting up a paypal ipn file for my pay pal account. Please have experience in doing both of these things. I would like to do these ASAP via IM. Please ask any questions via PM Thank You