Determine Users Account Name and OU from AD DN

Hi,

I'm written a script to get back some Ts profile information from Users' AD Account.  The script is great but depends on some hardcoded values.  What I would like to do is get the users CN and OU from the accounts distinguished name.  So far I have the below (bear with with me as its pretty clunky)

$Values= ($AccountName.DistinguishedName).Split(",")

$Values[0]+","+$Values[1]

$AccDN gives me the user part of the DN, however I then want to spin the rest of the string off into its own variable which I can then reuse (say $OUDN), however i'm unable to serach the string for the contents of the variable ($AccDN) and then remove it. 

Can this be done or is there a better way?