[SOLVED] check if the text string start with a specific character

Hi,
I want to know how do I check if the text string starts with a specific
character in if statement.

I used ...
=IF(ISNUMBER(FIND("v",'A2)),"OK","Not OK")

But, the result for this argument returns the text string which includes "v"
anywhere in the text string.
I just want to the text string which begins with "v".

How can I make it?