Thread: help needed Problem while creating sharing

I am having a desktop (windows xp) and sony vaio laptop (windows 7) and BSNL wa3002g4 router.
Desktop is wired and laptop is connected via wifi.
I am able to connect connect internet to both and use them parallelly(simultaneously).
I have also created sharing between two systems (desktop & Laptop) by making them members of same work group.

the problem is laptop can read shared folders of my desktop(it can read write and delete files).
But my desktop can view only folders of laptop but unable to open the folder there is an error. the error image is posted below
Please help me in so that desktop can also read, write and delete files of shared folders in laptop