French Translation - URGENT due to being let down

We are creating an online resource for primary school children ages 6-10. We have an English version and would like (1) the text on screen and (2) the audio instructions from during the game translating using suitably "basic" words.

The English files are in text file format and we need the French files returning in the exact same format/layout. (Just overtype the English files...no special programs are needed.)

A quick turnaround is highly desirable! In fact the job will be allocated by the end of the 27th December. Delivery by the 2nd January is needed. So please give an estimated completion date.