Most FTP programs have the ability to change file permissions. Try right-clicking on the file or folder you need to change and then looking for an option called "chmod", Change File Permissions", "Change File Attributes", or "Properties". FTP programs sometimes allow you to specify attributes via checkboxes; however, the easiest way to specify permissions is to just enter the appropriate number. (Usually 777.)
Web server operating systems keep track of "file permissions" for all files and folders. These permissions typically determine who is allowed to Read, Write, and Execute the file or folder. Permissions are usually specified by a three digit number, such as 755 or 644 or 777.
In order for a program that runs on the web server (like SnippetMaster) to read and write to the database, the appropriate files must be both readable and writable. (chmod 666) In order to create new files in a folder, the web server requires that the folder have read, write, and execute permissions set. (chmod 777)