The IStringList::get_Item method retrieves an individual item from a string list.
HRESULT get_Item( VARIANT Var, //VARIANT that contains the name of the item in the // collection VARIANT * pVariantReturn //pointer to a VARIANT that receives the item value );
You can use this method to retrieve a particular item from an array that has been returned by a Form, QueryString, or ServerVariables collection.
QueryString, Form, ServerVariables