Ubuntu 10.04 & 12.04 sharing folder to Windows 7

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http://askubuntu.com – Ubuntu 10.04 & 12.04 sharing folders in folder properties works (asked me to install something) sees and i can connect using my usernames and passwords. BUT from Windows 7 i can see them but cant connect. How to do that? I read about 5 ask ubuntu topics- none solves this problem. Maybe some solves it for Xp i dont know but none solves my problem. All 3 comps are on router. 10.04 is on WIFi so they see and connect can only Ubuntus. (HowTos)