basically:

ShowPic x:\path\filename.bmp

and that's it. If you want it to close after a few seconds just use SLEEP and KILL or SETFOCUS/SENDKEYS("~{F4}")

KiX:

SHELL "%comspec% /c showpic1 c:\winnt\lanma256.bmp"
SLEEP 5
SHELL "%comspec% /c kill -f showpic1.exe"

or

SLEEP 5
while SETFOCUS("showpic")<>0 loop
SENDKEYS("~{F4}")

cj

p.s. that code is from memory, let me know if it is wrong.