Attention! It was done and tested on Windows Phone 7.8 Rainbow Mod 2.2 (7.10.8862.144/1750.0823.8862.13110)! To change smiles in the Russian layout, go along the registry path:
[HKLM \ Software \ Microsoft \ FingerKB \ Layouts \ {5c5c8baf-a0a5-44ba-866a-bdae99200c60} \ Keys]
In this section there are subsections in which smiles are contained.
Change to your taste, reboot and enjoy.
You can edit the registry from a PC
this program.P.S. On the specified path are smiles of the Russian layout. It is also not recommended to leave the emoticon key empty - a fatal error will occur when the emoticons layout is called up and the phone will go into reboot.
Result: