How to replace a freezer seal?

I think I need to replace the seal on my freezer, it's a 97 we just defrosted it 2 months ago and it's got ice everywhere already.  I have found the part but was wondering if it might be something else, someone suggested checking to see if the door is aligned first.  It is not torn or anything.

Burf8 years ago
Here is a link to a home repair site that I have used several times . Its well documented with illustrations, and has easy to follow  how-tos. The link is to the page concerning freezer repairss:
http://www.acmehowto.com/howto/appliance/freezer/freezer.php