offline payment mode for applying for gate online.

hi,
i want to apply for GATE through online application and use demand draft for payment, but i'm not sure whether i also need to post the demand draft to the GATE office at Kanpur along with the other documents after applying.
Please help me clarify this doubt as soon as possible.

i've heard that i need to send a signed print out of my submitted form along with photo and other documents, does that account for my signature which will appear on my admit card?? if so can i sign any where on the print out??

Awaiting for a reply. Thanks in advance.