This study will compare how well regular insulin will compare to glargine (Lantus®) once daily plus glulisine (Apidra®) insulin before meals in hospitalized patients with type 2 diabetes and elevated blood glucose (sugar) levels. Lantus is a long-acting insulin which is given subcutaneously (under the skin) once daily. Apidra is a rapid-acting insulin which is given subcutaneously several times a day and frequently before meals. Regular insulin is a short-acting insulin in clinical use for more than 20 years that is also given subcutaneously several times per day. Lantus, Apidra and regular insulins are approved for use in the treatment of patients with diabetes by the FDA.