How TO change Category Page Layout in Magento
Change local.xml file in layout folder
<catalog_category_default>
<reference name=”root”>
<action method=”setTemplate”>
<template>page/2columns-left.phtml</template>
</action>
</reference>
</catalog_category_default>
<catalog_category_layered>
<reference name=”root”>
<action method=”setTemplate”>
<template>page/2columns-left.phtml</template>
</action>
</reference>
</catalog_category_layered>
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