Corrupted PST

Hello internet world… Here’s what I’ve got for you today.

I have a PST (Outlook 2003 version), and this PST has about 3 years-ish worth of emails on it.

Problem is, its corrupt. I know there are all those “Buy this product and it’ll fix you” programs, but I don’t want to risk one not working.

Does anyone know any tips or tricks to uncorrupting a PST so I can pull my old emails off of it?