sample petition to unseal adoption record

I'm a aunt looking for my nephew, and on one of the replys it said that when the adoptee goes to get their files opened there will be something in there stating that their family is looking for them and therefore it will be ok to open the sealed document. My question is how do I go about letting the courts know that we are looking for John and to put that in my nephews file? Thank you all for your time, bre36