MOSS Collect Data from user custom email

Question

Hi,

I am trying to send out a custom email, after the Collect Data from user step in my primary workflow which starts when an item in list X is created.

I have created a secondary workflow to start when a new Task item is created (this is created by the Collect Data from user action in the primary workflow).

But have a problem retrieving the information related to the task from the list X. I know the ID of the related item in List X is stored in a URL within the "Link" column in the Tasks lists. But can't see any string manipulation function that will grab this ID so I can use it to link back to relevant item in List X. Is there an easier way to do this?

Many Thanks, Nav