kix will do that just fine.

use enumdir() to get an array of all the filename.url in your favorite folder

code:
$folder=readvalue('HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders','Favorites')
for each $file in enumdir($folder,'*.url',1)
if readprofilestring($file,'InternetShortcut','URL')=$MyOldURL
$=writeprofilestring($file,'InternetShortcut','URL',$MyNewURL)
endif
next
_________________________
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