alter table

Hi, my tb1 already have a primary key, how to drop it and recreate a new one
is auto id primary? Please help...Here is a good post from Itzik Ben-Gan:
http://www.windowsitpro.com/Article...qlserver2005.de
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> Hi, my tb1 already have a primary key, how to drop it and recreate a new
> one is auto id primary? Please help...
>