When you read the solution you're going to think "isn't there a shorter way to do this?" - if there is a shorter way then I have yet to find it so:
Helpful tip before you start: have notepad open for copying/pasting if you need to do this more than once.
Step 1: On your Frontpage (yes - I do mean Frontpage) - create an internal link to the subject folder/room that you want on the left hand side of your screen.
Step 2: Once you have created the link - edit it - this will show you the
last half of the URL you need to create the link you need on the left hand side (eg - /harrow/links/link.phtml?idesc=13&iid=2685 ). Copy and paste this into notepad.
Step 3: Click on "Room" on the left hand side then click "Customise tool package" from the 'choose' menu (top right).
Step 4: Select "new tool" then click on "user-defined button" at the very bottom of the page.
Step 5: Add an appropriate title (eg English/Norwegian/etc) then edit the URL - you already have the last half of the URL you need so you just need the first half which is '
fronter.com' - combine the two together to create the URL ( eg
fronter.com/harrow/links/link.phtml?idesc=13&iid=2685 )
Step 6: click "save" and then change the order of the buttons as appropriate.
Step 7: delete the links you created on your Frontpage because you won't need them any more
It's not an elegant solution but it will get the job done.