Are you looking more for what the differences are in faith/practice between OPC and PCA? Assuming "yes".... I know the PCA encourages infant baptism and such children receiving the Lord's Supper at an early age. I believe the OPC encourages infant baptism, but withholds the Lord's Supper until the child is older (teen-agish, right?).

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Kristine O.
Vancouver, WA
Hillcrest Chapel (non-denom.)
PCA-girl at heart
Daughter, Sister, Auntie, and Friend.

"Our great Teacher never loses patience with His dull scholars." (Alexander Maclaren)