98 Blazer driver door spring replacement. How do I (they)?

hi all you. My damn 98 Blazer is falling apart. The spring on the driver door was corroded i suppose and fell (broke) off. So now my door doesnt close. I have to lift it up a little. A friend had ordered me the part was gonna just put in a new one, but when we went to look at the door we noticed that the part where the spring sat at is welded. Is this normal? OR am i talking crazy? There didnt seem to be any screws or anything. Maybe im not explaining myself. I just couldnt see how you could take the door off without unwelding it. sighs..i dont know. someone know what im talking about?? any reply appreciated. thanks guys.

Link below is from the How To section and will help you fix it and a common thing for Blazers:

http://www.automotiveforums.com/vbulletin/showthread.php?t=476619

thanks! that gave me a great visual.

its not hard at all to replace but you need a gm door spring tool which is about 15 bucks