On this page you can find links to additional dictionaries for Stock Photo Assistant. Stock Photo Assistant is compatible with SDict format, so you can used all dictionaries of this type.
Full list of dictionaries can be found here: http://sdict.axmasoft.com/en.

Most usefull of these dictionaries are:

ENGLISH-ARABIC	http://sdict.axmasoft.com/en/view.php?file=eng_arabic.dct
ENGLISH-DANISH	http://sdict.axmasoft.com/en/view.php?file=English_Danish.dct
ENGLISH-CZECH	http://sdict.axmasoft.com/en/view.php?file=English_Czech.dct
ENGLISH-GREEK	http://sdict.axmasoft.com/en/view.php?file=English_Greek.dct
ENGLISH-SPANISH	http://sdict.axmasoft.com/en/view.php?file=eng-spa.dct
ENGLISH-FINNISH	http://sdict.axmasoft.com/en/view.php?file=eng_fin.dct
ENGLISH-FRENCH	http://sdict.axmasoft.com/en/view.php?file=English_French.dct
ENGLISH-HUNGARIAN	http://sdict.axmasoft.com/en/view.php?file=eng-hung.dct
ENGLISH-ITALIAN	http://sdict.axmasoft.com/en/view.php?file=English_Italian.dct
ENGLISH-DUTCH	http://sdict.axmasoft.com/en/view.php?file=English_Dutch.dct
ENGLISH-POLISH	http://sdict.axmasoft.com/en/view.php?file=English_Polish.dct
ENGLISH-RUSSIAN	http://sdict.axmasoft.com/en/view.php?file=eng_rus_short2.dct
ENGLISH-TURKISH	http://sdict.axmasoft.com/en/view.php?file=English_Turkish.dct
ENGLISH-UKRAINIAN	http://sdict.axmasoft.com/en/view.php?file=English_Ukrainian.dct

You must download a dictionary file (with .dct extention), and place it at folder, where Stock Photo Assistant is installed ("c:\Program Files\SPAssist" as usial).