I think I did. Quoting my own post on another thread:
I just tried something different with Photopoint and this seems to work.
1) Save your pic to an album.
2) Open the album and click on the thumbnail of the pic you want to use. This will bring up the larger version.
3) Right-click on the large version of the pic and select "Open Link In New Window"
4) Copy the URL from the address line in your browser...it should contain something like "Sequence=0&res=high" at the end
5) Paste this link in your sig with the "/image....jpg" etc.