Resolved Home Network Permissions

I have a 2 computer home network, 1 computer the laptop is running Windows Vista, and the other a Desktop is running Windows 7. From the laptop I can see the desktop and view the share folders, but from the desktop I can see the laptop but can't view any of the shared folders, I get an error "You do not have permission to access \\laptop. Contact your network administrator to request access ". I have check the network and can ping the laptop and the permission are the same on both computers, the only thing is I have different passwords on each computer. It was working fine just a few days ago, anyone have any ideas

Thanks