How do I set linux file permissions for RDS access

[postwick]

I can connect to my Linux (RedHat 7.2/CF 4.5.1) server remotely using RDS, with no problems. I can browse to my /var/

http://www/html

folders OK. As soon as I try to create or edit a file, I get:

"Error attempting to open file: /var/

http://www/html/ubeek/untitled.cfm.

<P> Error = Tried to open read-only file for writing, or file's sharing mode does not allow specified operations, or given path is directory.&quot;

It's obviously a file/directory permissions issue. What do I chmod/chgroup the files/directories to? How do I set the permissions (i.e. chmod)?

Thanks,
Paul