(The /S makes it silent according to a search I did).
To make this Fixlet more robust, you might try to add to the relevance checks in the registry to check if Yahoo Toolbar is installed (the current relevance only looks for the uninstall file).
I don’t have it to play with, but you would generally do something like this:
look through the uninstall section of the registry for the application name you want
run the uninstallstring with a “/s” appended (assuming /s makes the uninstall silent)
Your relevance will look something like this:
exists keys whose (value “displayname” of it as string as lowercase contains “” AND exists value “uninstallstring” of it) of key “HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall” of registry
Action:
wait {(value “UninstallString” of it as string & " /s") of keys whose (value “displayname” of it as string as lowercase contains “” AND exists value “uninstallstring” of it) of key “HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall” of registry}
So you will want to change the two “” sections to be the name of the app you want and see if that works.