1/ first try add/remove "windows components"
2/ if that doesn't work go to windows update web site and you will (maybe) asked to download these additional language packs as an option
3/ go to add/remove programs and click on add/remove Internet explorer - then ask to add components - extra language packs should be displayed.
If the above doesn't work then let me know and i can give you other ways - you see it all depends on the installed status of your IE.
In my encoding section, under the view tab in internet explorer, i have very limited languages.. i need more like korean text encoding and greek.. where can i get them and how do i install them ?