You can of course do everything you want with raidabilities, and the editor makes that simple, however...
_Fetish_clickcures.xml is a completely separate file from raidabilities. This file controls what happens when you click a detrimental icon in the PLayer, Group and Raid windows.
If you open it in NotePad, you should find the following code on about line #39
Code:
<Data ability="Cure Curse" abilityNum="969542071" channel="true" channelName="healchan" group="false" Name="Curse" raid="false" tell="false" />
If you always want Cure Curse announced in raid channel, change...
raid="false"
to
raid="true"
By default, Cure Curse is setup to announce in a custom channel named "healchan". If your guild uses a custom channel for important announcements like this, you probably want to replace that channelName with whatever you're guild uses.
Note: you can make changes on-the-fly while in-game by Clicking the FetishCentral button (below the EQII button) and selecting "ClickCures". In-game changes will be lost when you log out.