VSL and Foreign Language (x-posted)

[Staceyshoe]

My older son and I are planning to start learning Spanish together in preparation for a possible international trip next year.  My younger son has expressed a very strong desire to learn Spanish as well.  He is *not* an auditory learner.  Testing has shown some indications of an auditory processing and/or language processing problem but no diagnosis.  Language (even English, which is his first language) does not come naturally to him.  How would you go about teaching a foreign language to a young VSL?  (I'm not expecting a lot of progress but want it to be fun and for him to learn something--even if it's very little--that he can use within our family and on our trip.)