Some more information..
Just to let you know, you really don't have to use chmod-command to make files executable, if your filemanager supports changing file permissions. In RedHat 8.0 for example, you can right click the file and select "properties", then open the "permissions" tab and check the user/execute checkbox. This does the same thing as chmod command. The only difference is, that chmod works in any unix system, and i had no idea about what file manager you vere using.