[Samba] Permissions opening exel

[Michael Dweck | Savvy Savant]

When a user from a windows machine connects authentication to a share works fine.

When they try to say, execute a excel document directly from a directory, user is presented with read only. If they try to drag the to the desktop from the share, thats ok
make changes and save, thats ok. move the file back. permission denied. When i created the shares i applied chmod 7777. The users are standard users under ubuntu server 12.4 lts.

The conf file is using:
Valid user = user

Do i need to use. Writeable,browse, readonly =???

Thank you