Looking for a reward mod

[gamma912]

I'm looking for a mod where users do something online and then they will get a reward on my vbulletin for it - if they have enough points or rewards they can then request the other users to do the same for them.

So if I request someone to do something and whoever does it can get points, until they've accumulated enough points, they can then make a request.

Anyone know anything that can do this?
Like enough points will allow you to post in a certain forum once.... and then your points get reset and you need to accumulate more until you can do it again..

make sense?

[gamma912]

Anyone have any idea??