if you were talking about validation as in making sure it respects a certain length, certain numeric values, etc. The easiest approach is to build your own regular expression.
here is a sample from microsoft:
(?!^[0-9]*$)(?!^[a-zA-Z]*$
)^([a-zA-Z
0-9]{8,10}
)$
=>Validates a strong password. It must be between 8 and 10 characters, contain at least one digit and one alphabetic character, and must not contain special characters.
here is a place for you to start:
http://msdn.microsoft.com/en-us/library/ms998267.aspxand a great free tool to build regexp:
http://www.ultrapico.com/ExpressoDownload.htm 
