Problems With Windows Xp Workgroup!!

Started to set up a windows xp workgroup. Contains a pc and a laptop. Ran the network setup disk. Now my problem starts. I can see the laptop from my pc but can not see the pc from the laptop. I can ping both computers and get a reply. Shared file on the laptop are fully accessedable from the pc. Why can i not see the pc from my laptop but can pull files from the laptop with the pc???