Launch System Preferences. To change the language open the International Pane and find the language you want and drag languages you want to the top. Their are 5 forms of English so drag them to the top of the list, in the order you want them to be used by the OS X system (in 10.4 just use the pull down item "Order for sorted list:" to select English). I have the English versions listed in this form list : English
To get the menu flag (staying in the International System Preference) select the tab "Input Menu"(from the top tabs). In the Input Menu put check marks in 'Character Palette", 'Keyboard Viewer', then go down the menu and also put the check marks in the country you want.
Mac Pro Dual 2.8 Quad (2nd gen), 14G Ram, Two DVD-RW Drives, OS X 10.9.1
2006 Mac Book Pro 2.16 (first Gen) OS X 10.7.5
2TB Time Capsule, 2 TB
Black, iPad (3rd Gen) 32G Black