Here are 3 possible options:
1. WinSCP
WinSCP (from
http://winscp.net/eng/index.php) allows you to easily drag and drop files from any windows system to any other system that supports ssh logins (including SME).
2. chown -R
It is possible to change file permissions en masse using
chown. The following command would change the ownership on all files below /opt/roundcube to user=www, group=shared:
chown -R www:shared /opt/roundcube/*
3. ibay +
mvIt would be much easier (IMHO) to extract your .rar files into an i-bay, then use an ssh session to move the extracted files where you want them (
mv /home/e-smith/files/ibays/my-ibay/files/myrarfiles /opt/roundcube/some-theme-path]) than it would to template smb.conf in order to make /opt a network share. Not to mention that one of the main reasons for putting web apps into /opt (when this first came up a while ago) was that it was supposed to be more secure than putting web apps into ibays where local users might have SMB access... (or something like that).