I see alot of people who have access to Poland records.
This is not so. But we might be able to help in other ways.
Do you know your Grandfather's city of birth and date of birth ?
Was he married in Poland ?
Do you know his full name ?
What religion was he ?
Have you checked his Naturalization Records ?
If he was married in your country. Do you have a marriage certificate ?
Did he serve in the armed forces of your country ? If so, check military records.
Did he leave a last will and testament ?
Your aim will be to find church records. We might be able to find the church.