Hi,
You must use the tag with the binary data of the image.
Like this:
--- Code ---
...
1
Name
....
1
10
16
2
0000000000000000F0FFFF03300000033C00000C0CFF3F0CCC03F00CFCF0C30FC0F0C300C0FFFF00
...
--- End Code ---
This "Data" is an "email" ico.
Hope that help.
PD: Sorry for my English, I'm from Chile, and here we speak Spanish :P