D:\Temp>dir
Volume in drive D has no label.
Volume Serial Number is 1C5A-305C
Directory of D:\Temp
12/07/2010 17:07 <DIR> .
12/07/2010 17:07 <DIR> ..
12/07/2010 11:45 2,873 1.xml
12/07/2010 11:46 25,857 10.xml
09/13/2010 13:15 115 2.xml
12/07/2010 11:45 2,873 3.xml
09/13/2010 13:15 115 4.xml
12/07/2010 11:45 2,873 5.xml
09/13/2010 13:15 115 6.xml
12/07/2010 11:45 2,873 7.xml
09/13/2010 13:15 115 8.xml
12/07/2010 11:45 2,873 9.xml
12/07/2010 17:07 93 del.bat
11 File(s) 40,775 bytes
2 Dir(s) 14,180,757,504 bytes free
D:\Temp>del.bat
D:\Temp>set mask=*.xml
D:\Temp>for /F "delims=" %A in ('dir /b *.xml') do if %~zA EQU 1024 del "%~dpnxA"
File Not Found
D:\Temp>
Files 2.xml, 4.xml, 6.xml, 8.xml are files of 1KB to windows.