If ur custom emotes keep disappearing go to:
C:\Documents and Settings\User\Application Data\Microsoft\MSN Messenger.
Where C is your system drive and User is your user name, now choose what you think is the folder corresponding to ur email adress and delete the "CustomEmoticons" folder in it. Restart MSN and re-add your emotes, manually or with an adder/manager from
http://www.mess.be
Sorry no other way...
Attached program to find out wich is yours...