WinCE 5.0 image - English for 7 " Display

Gandhi Sanjog
Hi ! 
from where I can download WinCE image files for 7" display - English
nboot_A70.bin and nk_a70.bin. They are avaialble in CD for Win CE 6.0 . I
need them for WinCE 5.0 (VS2005) 7" display - English.  Or else guide how
can we use Visual Studio 2005 for Windows CE 6.0 terminals programming.  
please guide. 
Thanks