bikendrajit, have you gotten an answer to your issue elsewhere?
Found this on a different thread, though it's applicabe to someone running Leopard, not Lion.
guys... I've tried every solutions i've found in this and some other forums to let my leopard connected with windows PCs and i FOUND THE SOLUTION!
now i can:-
• browse for every computers (mac & pcs) on my network easily
• connect to every computer with clicking on the list on finder SHARED sidebar
what i did is:
• reinstall leopard update 10.5.1 ( http://www.apple.com/downloads/macos...051update.html )
• reboot
• go to system preferences > network ...create a new location (automatic location will prevent you from changing the WINS details), then click APPLY
• now click advanced... on TCP/IP tab, turn off IPv6 configuration then APPLY
• now go to WINS tab, enter your workgroup name ( i've entered WORKGROUP on my mac ) and add a WINS server address ( i dont have a server so i enter my router ip address ) then click OK > APPLY
• reboot and my mac succesfully detects all macs and PCs on my network. They're also listed on my SHARED sidebar.
If this doesn't work, I suggest you start a new thread.