I got a mailer that is going out to 1.8 million people. For some reason they are including the reciever's signature. the signature files are the same name as the account number field. So basically I need something like ($$ACCOUNT..tiff)VSUB? 1 ICALL to work. any ideas?

Yes:
($$ACCOUNT..tiff) VSUB 1 0 ICALL
will work. What is the question ?

For some reason that didnt work the first time but it does now. I have another question, is it possible to ignore the call out for the image if no image exists?
for example John Smith has a signature and will print the signature but Joe Bob does not have a signature on file so there will be no image. currently the job will freak out and crash if it cant find a file.

Check the EXIST command:
IF ($$ACCOUNT..tiff) VSUB /img EXIST
{ ($$ACCOUNT..tiff) VSUB 1 0 ICALL }
ENDIF