Creepyncrawly, thank you so very much...
You are the man! It didn't boot successfully initially, but I did as you instructed and the phone breathed life once again. The 300 images I had stored in it actually turned out to be over 1300. Many of them are tiny bmps (banners and such), etc., but many of them, for example, quite a few gif files which I never knowingly save, my evil twin must have downloaded -so much garbage, so now I need to learn how to delete them from the phone. Fear not- I won't bother you with that. It should Google fairly easily- famous last (IT) words. But I am so very glad to have gotten my images back, not that I remember who some of those babies are, but thank you. I appreciate it more than I know how to say.
Following is the contents of the Odin message. Thanks again! I especially appreciate your being so patient, understanding, like a true professional behaves, not arrogant or pompous as I see so many wannabes treat those less knowledgeable.
<OSM> Enter CS for MD5..
<OSM> Check MD5.. Do not unplug the cable..
<OSM> Please wait..
<OSM> I777UCMD8_I777ATTMD8_I777UCMD8_HOME.tar.md5 is valid.
<OSM> Checking MD5 finished Sucessfully..
<OSM> Leave CS..
<ID:0/005> Odin v.3 engine (ID:5)..
<ID:0/005> File analysis..
<ID:0/005> Get PIT for mapping..
<ID:0/005> Firmware update start..
<ID:0/005> NAND Write Start!!
<ID:0/005> RQT_CLOSE !!
<ID:0/005> RES OK !!
<OSM> All threads completed. (succeed 1 / failed 0)