Here's the advice I found online -- this worked for me:
-- Delete the "TkBellExe" entry in
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft
\Windows\CurrentVersion\Run].
-- Re-boot. Now evntsvc.exe won't be an active task, which enables
you to
-- Delete (or rename) evntsvc.exe.
If you start RealOne now, it might place that entry back into the
registry. But as there's no such executable as evntsvc.exe
anymore, it has no effect.
A good solution; I'll try that.
My case-by-case way of dealing with tkbell.exe is to run Mike Lin's
"Startup Monitor", a companion program to his "Startup Control Panel".
Each time I use RealPlayer, Startup Monitor notes that tkbell wants to
register at start up, and I say no. It's necessary to do this each
time, but at least it blocks tkbell starting between RealPlayer
sessions.