Rozwiązany How to set network of 2 laptops with Windows 7 over wireless router

I have 2 laptops with Windows 7 on them, one with 64bit Ultimate and another with 32bit starter. Both computers use internet over wireless router but I would like to establish computer network between them for sharing some folders. Both laptors use the same name of WORKGROUP (which default one) and I set file sharing on one laptop and I can see that folder with shared file on another laptop but when I try to open it I get error message saying "folder is not available. You might have no privilege to use shared files. Please contact with administrator......Login error. User account is probably limited. Possible solutions: forbidden empty passwords, limited login hours or maybe breaching the rules"

Has anyone idea how to do that? Maybe router has wrong setting or maybe there is conflict with with Anti-virious program, I use free version of AVG in both laptops, or maybe there is conflict with firewall either in router or in Windows themselves.

I would be very grateful and I will appreciate it so much for any help. Thank you in advance.