Network Sharing

My laptop runs Vista and my PC is on XP. I have set up sharing on my Documents in my PC and also the printer it is hooked to. I have a wireless connection with the router set up as an access point. The wireless connection is configured to see shared documents and printers.

In spite of this I can’t see any PC documents on the laptop and I can not see or access the printer.

Any one have an idea how to fix this?

Thanks.