Automator actions

Does anyone know how to activate an automator workflow or application thru applescript? What I want to do is automate the 'Save PDF to ****" which comes up when I press the PDF button in the print dialogue box.

Here is one way to launch a workflow with Applescript albeit crude:

– set theWorkflow to the path to your workflow e.g. “Macintosh HD:Users:YourUsername:Documents:Workflows:MyGreatWorkflow”
set theWorkflow to “YourHardDriveName:Users:YourUserName:PathToYourWorkflow:YourWorkflowName”
tell application “Finder”
open file theWorkflow
tell application “Automator”
end tell
tell application “System Events”
keystroke “r” using {command down}
end tell
end tell
– set the delay so that it waits until the workflow has completed running, say, 20
delay 20
tell application “Automator”
quit without saving
end tell

Model: Mac Pro
AppleScript: 2.0
Browser: Opera/9.24 (Macintosh; Intel Mac OS X; U; en)
Operating System: Mac OS X (10.5)