Does anyone know how to R&R the weather seal strip on a car door?

I just bought a 1990 300CE. The weather strip/seal around the front door has a few cracks. I want to replace it with a new seal.

Does anyone know how to perform this procedure?

Thanks in advanced.

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Current Benzes

1989 300TE "Alice"
1990 300CE "Sam Spade"
1991 300CE "Beowulf" RIP (06.1991 - 10.10.2007)
1998 E320 "Orson"
2002 C320 Wagon "Molly Fox"

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