Then I thought, wait a minute, why am I doing this?
The thing is more or
ess useless anyway, why run it at all? So I turned
it off in the preferences.
Oh.... I hadn't noticed that it was something that could be turned off in preferences, but there it is, staring me right in the face. It even stops/starts vmware-tray when you change the setting. The tray program is certainly not useful to me. That's what I'll be doing from now on then. Thanks 
killproc is often a sysvinit script "library" function that some distros define. It's used in the stop commands in the /etc/rc.d init scripts, but the functions library (a text file with scripting functions) has to be sourced in the scripts. SuSE provides their own binary named killproc in their sysvinit package and it can be used outside of the init scripts.
In the simple case like this, the killall command (simply killall vmware-tray) should do the job (killall -9 would forcibly kill). The default of sigterm when no signal is specified should suffice, but that's the advantage of using your killproc program. killproc will send sigkill if the process doesn't respond to sigterm within a few secs. So it gives the process time to shut itself down gracefully, or forcibly kills it if necessary.
