advanced donations

I'm interested in being able to set up a pledging system, that can enable donation bounties as a content type, and allows people to first pledge, then be billed if pledges reach a capped amount, or have no one billed of pledges do not reach an amount.

Is it already possible to do this with existing modules (like e-commerce and cck)? If not, I am committed to producing this capability, and would feedback from this group on suggestions about how to approach from a module creation standpoint

Hey guys,

I have a couple of modules that are works-in-progress. The one is for donations. It gives the user the opportunity to either select a fixed amount and/or add their own. It also has a couple of other items added to the form. The other module is support for the mercury pay api. Anybody interested in these modules should contact me via my contact form.

Kind regards, Jim