Using the GetFile method in eScript

Hi all,

I am writing a script to retrieve various Document files from the file system by looping over the records of the Admin Sales Tool BC and saving  them into a folder for other usage.  My problem is when the script hits a record and the associated file does not exist in the file system, the script errors out and stops running.  I need a way to verify that the file exists before calling the GetFile method to avoid this problem.  Can anybody tell me how I can do this?  I have not been able to find anything on it.