Hello Friends.... I Am New To DP. first of all ,i tell you that i want my own payment system not like paypal.. means,the payment system should be such that 1.buyer or seller initiate process. 2.buyer send money to payment system.(payment system transferr this money to admin's paypal account.or hold the payment if possible.) 3.payment system send notification to seller that payment is received .now transfer the file,data,service..whatever. 4.after seller send data,the payment system send notification to buyer that the seller send the data... 5.then buyer download data,and review process starts.if buyer post positive response then seller able to receive payment and post negative response then seller does not allow to receive payment.. ok.this will be the payment system i want... now question is it is possible to make this kind of payment system,,,,and how much cost to it.. i dont have any techniqal knowledge. and also i want to integrate this system into my upcoming website...