>Hi JOJO.
>My problem is that I cannot get any utility or report tool that recognises my .Dat files
>
>I have tried Crystal but was not sure how to open the file

Then heavy artilery is due... look at the files in a hex editor, and try to make sense in how are they laid out. Then try to chop the file into records using low level file functions, various string-to-number functions etc etc. It's been done before, you should be able to find such functions around UT.