"CONVERT" is command tool used for converting true color images (640x480x24 windows bmp image)
So you should use command prompt and navigate up to folder where the program is.
Syntax: convert <-bmp2csi | -csi2bmp> <-o outputfile> <inputfile>
Example:
I had an image named "image.bmp" in a folder together with convert.exe
CODE
C:\tools\convert>convert -bmp2csi -o image.csi image.bmp
CD Shell Image conversion utility, Version 1.1
Copyright (C) 2002-2005 Michael K Ter Louw
Visit http://www.cdshell.org for terms of use.
Bitmap image verified 640x480x24.
Encoding CD Shell Image (version 1)...
Image encoded successfully.
Dont use convert.exe on 320x240x8 images.
PS Open command prompt from START>Run using "cmd" in case u didnt know