Xp Home network share issues

Hi, I have a small home network with xp home acting as the main desktop with a shared folder.A cisco 800 router is used for the hard wired desktop which has attached a belkin 604 wireless router for any wireless users. I am not able to ping or map a drive to the share on the desktop from my laptop. The cisco has an address 10.1.1.200 and acts as the dhcp and gateway to the internet with the belkin set to 10.1.1.210. The laptop is able to get an ip from the router OK and access the internet and thats it. I have recently installed a network printer via IP to the cisco with no problems and can connect to the printer and ping OK.
Am I missing something here….

Phil