Just in case you haven't checked it out we have localized Silverlight 2.0 SDK documentation at MSDN Online Library for Japanese, French, Italian, German, Spanish, Simplified Chinese, Traditional Chinese and Korean. SDK (CHM file) download is also available at Microsoft Download Center.  

MSDN Online Library CHM
JPN: http://msdn.microsoft.com/ja-jp/library/cc838158(vs.95).aspx JPN CHM
FRA: http://msdn.microsoft.com/fr-fr/library/cc838158(vs.95).aspx FRA CHM
ITA:  http://msdn.microsoft.com/it-it/library/cc838158(vs.95).aspx ITA CHM
DEU: http://msdn.microsoft.com/de-de/library/cc838158(vs.95).aspx DEU CHM
ESN: http://msdn.microsoft.com/es-es/library/cc838158(vs.95).aspx ESN CHM
CHS: http://msdn.microsoft.com/zh-cn/library/cc838158(vs.95).aspx CHS CHM
CHT: http://msdn.microsoft.com/zh-tw/library/cc838158(vs.95).aspx CHT CHM
KOR: http://msdn.microsoft.com/ko-kr/library/cc838158(vs.95).aspx KOR CHM