Hi all,
I was wondering, how can I make an online paid service?
The thing is, I have a software that I want to monetize, the sw is a collection of tools for a chemistry\medic lab,
in the specific it process spectrograms\cromatograms, it have function like noise reduction,baseline drift correction,
advanced smoothing etc...
The user upon payment will be able to upload the files to process and select the tools to use

I was thinking about running the software serverside, and using Paypal API's on the website to control the payments and the UI,

but since I never tried to do something like this I'm searching for hints tutorials.. anything =D
thanks in advance