to not trigger an error if no file is present

Hi

I have a try - catch block for a Data flow that reads from EXCEL .

I enabled the file access errors  ( and a script embeded that will send emails ) .

Now I want this job to run on a schedule :

1. if there is a file , but BODS is unable to open it or something , then it should handle the error and send email

2. BUT it should do nothing if no file is found . ( This is not a error )

How do I do this . right now its catching exception if no file is found . How do I get around this

rishi