Deny links in profile and posts for new users

[Techmonkey]

Would it be possible to stop new users posting links and having links in their profiles until they have reached a certain post count.

The idea is to stop people/bots registering and posting pages full of spam links.

Is this possible.

Also as an addition I would like specify a certain forum section that this doesn't apply to as we have users pasting HiJackThis logs that contain lots of links.