excuse typos in my last post. and i agree with nepalikanchha. you may not need long time. 2 years may be more than enough. the other thing that i would like to point out is, there is a big impact of the friend circle with which kids mingle. no matter how hard you try to teach them a language (any language for that matter), if they speak a certain language with their friends whom they mingle with, that one will be the most dominant and natural language for them and all others will remain overshadowed. its almost impossible for them to master 2 or more languages at the same time with utmost ease. LooTe