windshield replacement question

my windshield needs replacing because of a long crack (wont pass inspection.) my question is : since my gasket doesnt look dryrotted or anything, what are the chances of me saving the $100. that a new gasket would cost and reusing the old one. i have a used (free) windshield that has some delamination (white fog) along the edges. i couldnt get a new windshield through any glass companies locally, so i gotta use it. i never replaced a windshield before so im not even sure how to get the old one out without hurting the gasket if i can reuse it. there is chrome that covers about half the gasket width. any tips would be helpful. its not that im trying to be cheap, im just poor right now.