"Display Growl Sticky" trigger

[Chris Cairns]

I like this script(which is in the forum itself):
--Script (Display Growl Sticky)
using terms from application "Quicksilver"
        on process text theText
                growlStick(theText)
        end process text
end using terms from
on growlStick(theText)
        tell application "GrowlHelperApp"
                set the allNotificationsList to {"Quicksilver Growl"}
                set the enabledNotificationsList to allNotificationsList
                register as application ¬
                        "Quicksilver Growl" all notifications 
allNotificationsList ¬
                        default notifications enabledNotificationsList ¬
                        icon of application "Quicksilver"
                --       Send a Notification...
                notify with name ¬
                        "Quicksilver Growl" title ¬
                        "a quick note:" description ¬
                        theText application name ¬
                        "Quicksilver Growl" with sticky
        end tell
end growlStick
is there a way to set up a trigger which would take "current  
selection" (selected text, ofcourse) and make it a Growl Sticky ?  
(Presently, this script requires you to copy and paste the text or  
write it)
Thanks