PRN File..

Hey All…
Having a problem with a particular file format. prn file. I know it’s a print file, I can’t use any notepad,wordpad,word etc to edit it. All jumbled. IWe have an OCR system which sends out coupons to customers, they send back payment andsometimes forget to send the coupon, hence we don’t know where to apply payment. Only file I have is the .prn file. Any suggestions of how I can view to get the account number ? Thanks in advance.