Hi

I was asked this question a while back by Rob - What Office 2010 Language Interface Packs contain a speller?"

Well here is the full list for Office 2010 - sorry I took so long to publish it!

If your language is on this list well then by downloading the 2010 LIP for your language then you can use the speller in your language as the speller is contained in the LIP download.

Afrikaans
Albanian
Armenian
Assamese
Azerbaijani
Bangla (Bangladesh)
Basque
Bengali (India)
Bosnian - Latin 
Catalan
Galician
Georgian
Gujarati
Hausa - Latin 
Icelandic
Igbo
Indonesian
Irish Gaelic
isiXhosa
isiZulu
Kannada
Kiswahili
Konkani
Kyrgyz
Luxembourgish
Macedonian (FYROM)
Malay (Brunei Darussalam)
Malay (Malaysia)
Malayalam
Maltese
Maori
Marathi
Nepali
Norwegian (Nynorsk)
Odia
Persian (Farsi)
Punjabi (India)
Serbian - Cyrillic 
Sesotho sa Leboa
Setswana
Sinhala
Tamil (India)
Tatar
Telugu
Urdu
Uzbek - Latin 
Vietnamese
Welsh
Yoruba