If you use iPhone or iPad, now you can get Microsoft WORD, EXEL and POWERPOINT for free. Those are not just viewers, you can use them to edit the file (I head it is limited in functions).
SanDiegoTown & LosAngelesTown 
Seattle Execs. 
コーチ探せる 
Official Bloguru Support 
神谷保険 
内倉憲一 
さち 
KUMA 
田仲なお美 
bokushi 
あさこ