Executing a custom service after an event occurs in UCM

Hi,

We have a requirement where we need to save a document in UCM to a different location along with the Vault & Weblayout directory. When the content is checked-in, first it is sent for conversion to the Inbound Refinery & then the converted file is stored in Weblayout directory. Now, we need to copy the converted file to another location. We have written a custom service in UCM to save the file on the desired location. The issue is that the service is to be called after the converted document has been stored in Weblayout & as we all know, there is some delay due to conversion by the Inbound Refinery, hence the service can not be called right after check-in is done.