I need to create a system that acts like paypal - people can transfer money from their account to a central account and vice versa.
A person can transfer funds from his bank to the account with a credit card and withdraw funds to his bank.

any advice on how this can be done? implementation and all?

thnx in advance.

I always wonder what sort of responses the posters of such questions are expecting to see.

PayPal is a very elaborate set of services, developed by a team of extremely experienced developers over several years. It takes a massive amount of in-depth knowledge about the credit system, the banking system, the protocols used by that industry, XML, EDI, Soap, security issues...

And you're seeking advice on "implementation and all" from a bunch of dudes on a forum?

My advice? Do a reality check.

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