"Target Folder Location" question

im using winXP

i go to desktop and double click "My Computer"

in my computer i see:

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Shared Documents
pc1's Documents
(Local Disk C
(Local Disk D
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i have already manage to change the target folder location of "My Documents" (c:\Documents and Settings\pc1\My Documents) --> (d:\Documents and Settings\pc1\My Documents)

now the problem is; i want to change the target folder location of "Shared Documents" from (c:\Documents and Settings\All Users.WINXP\Documents) -->
(d:\Documents and Settings\All Users.WINXP\Documents)

please give step by step procedure. thnx