You can also use the newer command MessageBox which has a lot more control over which buttons you show. It is essentially a standard, windows message box that can show OK, OK/CANCEL, ABORT/RETRY/IGNORE, YES/NO/CANEL, YES/NO, RETRY/CANEL. I'm not sure if you can display an image as well as the message though - I've never tried.
You can also use the newer command MessageBox which has a lot more control over which buttons you show. It is essentially a standard, windows message box that can show OK, OK/CANCEL, ABORT/RETRY/IGNORE, YES/NO/CANEL, YES/NO, RETRY/CANEL. I'm not sure if you can display an image as well as the message though - I've never tried.