How do I load license file in Ax 2012?

Path:
System administration/Area page/Licensing/License information

I skipped Initialization checklist, how can I get it back and perform steps?

Path:

System administration/Area page/Setup/Checklists/Intialization checklist

How to find out number of records in each table using code?

static void myJob(Args _args)
{

#AOT
#Properties
TreeNodeIterator iterator;
TreeNode treeNode;

iterator = Treenode::findNode(#TablesPath).AOTiterator();
//make the tree node point to the first table
treenode = iterator.next();

while (treeNode)
{

if (treeNode.AOTgetProperty(#PropertyTableGroup) == 'Main' && treeNode.AOTgetProperty(#PropertySaveDataPerCompany) == 'Yes')
{

info(strFmt("Table Name : %1 Legal Entity: %2 Total Records:%3", treenode.AOTname(), curext(),SysDictTable::casRecordCount(TreeNode.AOTname(),true)));
}

treeNode = iterator.next();

}

}