Project DescriptionYou can provision masterpages and page layouts using features or SharePoint designer, but if they are already created and you haven't got SPD, how do you update them?
STSADM Command to upload masterpages and pagelayouts to the Masterpage and Page Layouts Gallery.

For more information please see
http://www.davehunter.co.uk/Blog/Lists/Posts/Post.aspx?ID=111