Form 15CB and steps for making payment

Hi All

can anyone please send me the detailed steps for making payments to a foreign client at USA by a resident India company.

I mean wat else is required to be done apart from obtaining a certificate of Form 15CB duly certified by a chartered accountant and filing Form 15CA before sending it to Reserve Bank Of India/authorised dealer.

Is any other documentation required either by the RBI/authorised dealer...Please send me the detailed steps for the entire process to get complete...

An early reply will be highly appreciated...