Can't write to samba share

I had the same problem. from xp i had complete access while W7 showed read and write permission, but could not actually create new files or edit existings. I had:

read only = no  

already in the smb.conf
by adding

writeable = yes 

(beware! not writable ) windows7 can modify existing files and create new files.

for what it is worth, I couldn't access my samba share, maybe you have forgotten to add you username to the samba password group (for lack of beter description phrase)

this is what I did to get mine to work

smbpasswd -a username

after by using nautilus, shared my drive/folder with right-click, sharing, etc.

create your password, and use your username and passsword (which you just entered) to access your samba drive, you can also map this drive in Windows

hope this could help