how do I say this?

[cathycordova]

::)can someone tell me how to translate: "I hereby release"

[Tomisimo]

It would depend on what nuance you want to give "release" but it would most likely be something like

Por la presente yo absuelvo/exonero/suelto/libero ...

If it's something written I'd use "por la presente" if it's someone talking I might use "por este medio"

Oh, y bien venida a los foros!