Network router printing issue (by 2 users)

My network is connected to a Dlink DIR 615 N wireless router
Desktop running XP connected to router port 1
Notebook, Vista home premium - wireless connection
All above communicate fine except printing from wireless laptop.
Printing worked fine till network magic 7 day trial version expired. Now router is blocking printing to desktop connected printer from notebook.

My question is: Is there a way the router can be configured to allow printing again from the wireless notebook without having to buy the full version of network magic form pure networks
thanks