Thank you for your input. I have found that all forms of until are correct, but eventually I have looked in the Oxford English Dictionary and it is spelt "till". And I have changed it accordingly.
Yes I think I would agree "till" rather than *'til*, though the latter makes more sense as its an abbreviation of "until"!
But just as a note of interest, you shouldn't use "till" in a formal letter or something like that - use "until"
But this translation is in the *Chat* category, so your choice of "till" is perfect.
And if using MSN etc, you can just write "til", depending how lazy you're feeling