[RESOLVED] exclude folder or files

[basti42]

 foreach (string filepath in System.IO.Directory.GetFiles(@"C:\Documents and Settings\user", "*.*", System.IO.SearchOption.AllDirectories))
            {
                FileInfo fileSize = new FileInfo(filepath);

                if (fileSize.Length > 25000000)
                   {
                      File.SetAttributes(filepath, FileAttributes.Normal);
                      listBox1.Items.Add(filepath.ToString() + "-" + fileSize.Length.ToString());
                    }
                    label1.Text= listBox1.Items.Count.ToString();
            }

above code will search all files including sub directories
but i want to EXCLUDE the file or folder below:

C:\Documents and Settings\user\Local Settings\Application Data\Microsoft\Outlook\*.*

how? tnx in advance...