Browsing shared folder via VPN

Hi,

My question is How set permission in cisco pix firewall to allow a VPN user to access the shared folder of a perticular PC.

Network Configuaration :-
We have different groups , for each group we created separate VPN so that they can have access to only a perticular range of IPs.

Now I want a certain user to access a user to access / brows share folder of a PC which is not in there range list.

I don know how to configure this perticauls thing. I know that we can give it. I had never given permission to access only shared folder.

access-list [access-List] permit tcp [IP Range with subnet mask ] host [IP address of PC which is outside the range ] eq [Port]

Can u please tell me which port to be opened for the same.

Thanks & Regards

djguruji