Lehman Brothers Holdings Inc.'s brokerage wants court approval to set aside more money for creditors, the Wall Street Journal reported on Saturday. In a Thursday bankruptcy court filing, brokerage trustee James W. Giddens said that he needs to create a reserve account for holders of secured and priority claims against the brokerage. Those claims, which include fees incurred during Lehman's bankruptcy and other claims, are currently estimated at about $624 million. If Giddens gets that approval, he said that he wants to turn his attention to paying out more than $4 billion still owed to general unsecured creditors of the brokerage, a group that includes former employees and others.