1) Search (Windows folder) & Modify this file "sysdm.cpl" with exescope or Resource hacker I use Resource Hacker
2) Replace the two bitmaps u see in Resource hacker with ur own bitmaps. Create two bitmaps one 256 color and the other 16 color and then replace.
*img153.exs.cx/img153/1498/step1qg.th.jpg
Save the changes.
3) After modifying backup the old file and replace with the modified file in these two folders since it is a protected file. Order is significant !
X:\WINDOWS\SYSTEM32\dllcache
X:\WINDOWS\SYSTEM32