VBscript to alter settings automatically in the default user profiles(Registry Keys).

Our client  using Swedish Keyboards . In Swedish Keyboard's, numeric key pads will have (,) comma as decimal separator. The Application Software that we are using requires (.) dot as decimal separator. So in order to achieve this we need to manually change the Settings in Control Panel --> Regional and Language settings (Change comma to dot in Advanced Settings). This setting is profile specific and we need to alter this settings in lot of computers (200 to 300 computers).
Basically what I am looking is that a VBscript which alters this settings automatically in the default user profiles(Registry Keys). If I can get this script that will be of great help.