Donations only for members with X days

Greetings

Is there a way for to set donations available only for members with more than X days in the forum? and how?

Thanks in advance

[Reeve of shinra]

This would be one way of doing it:

1. create a new secondary usergroup
2. create a promotion to add members to this secondary group after being around for x days
3. change donations to give to that group isntead of registered.

[Datacenter1.com]

Excelent idea !!! that's exactly what I want

Thank you