Reliance Power IPO - Payment Option and Over - subscription Estimates?


Now due to undersubscription 150 shares will be alloted to me. I have querry and remaining amount to be paid as I am out of station.
1. Can I pay this amount online thro ICICI direct?
2. If not can I use the cheque of my friend?
3.Do I need to submitt any document along with cheque (demand note). As told earlier i wont be able to collect any document on my address as I am out of station.