French and Spanish have special chars in them that are not used in normal English (accented vowels and such).
Are those chars supported in a varchar? Or do I need a nva
You have to use nvarchar.
http://theniceweb.com/archives/156
Most of the characters will fit in varchar but some won't, why take the risk.
Related Question
When must we use NVARCHAR/NCHAR instead of VARCHAR/CHAR in SQL Server?