How to get default configuration store scope setting value in mgento

Hi Guys,

One day i need to pull the country collection of selected in the Allow country list in under general tab for default configuration store scope but not getting any clue for this. After 4-5 hours review the code and database table finally  i success to do this. I don't know this is right way or not but it works . it may helpsome who want to such a things.......

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             $rr= Mage::getConfig()->getNode('general/country/allow','default');
$rr=explode(',',$rr);
$options =Mage::getModel('directory/country')->getCollection()
->addFieldToFilter('country_id',array('in'=>$rr))
->load()
->toOptionArray();


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 This line       $rr= Mage::getConfig()->getNode('general/country/allow','default');  help to choose the country id string for default scope value. And then we can get the selected country's  list.


enjoy!!!!!