Add slashes saga

I'm running into the old add slashes problem and I'm hoping someone might be nice enough to help me out. I created a form that lists all the last names in a database. Beside each name I have a checkbox which contains a value of their last name and because the user might select multiple names, I am assigning the values to an array (i.e. ...name="chkbox[]" value=O'brien...). I have the form set to pass the select values via a POST, with Register Globals OFF. On the following page I am printing out the selected names and in the example above (O'brien) the script only prints out "O" I lose the "'brien" which is problematic. I looked at the manual but I find it to be rather confusing on this point. What code can I put in place to help alleviate this problem? Thanks in advance! Ron