Being able to automatially credit peoples account with purchases

[mah300274]

I would like to know how to build the code or if there is script I can use to be able to credit peoples accounts with credits if they purchase the credits.

Like if you pay $1, then you get one credit that can be used to buy things.
If you pay $5 then you get 6 credits.

Then with the credits I would like the people to be able to buy items with them.

The main reasons for credits is to make my site look better / professional, and for where people can get additional credits like if they buy certian ammounts.

Thanks in advance! :)

[MagicMedia]

https://merchant.paypal.com/ca/cgi-bin/marketingweb?cmd=_render-content&content_ID=merchant/wp_standard&nav=2.1.0

[mah300274]

Can paypal help me credit peoples accounts and then they can use the credits for other purchases? (not just buying credits)