Is there software that will convert
 

.dat files back to .txt files?

Bump.

dat files from what ? probably not

how about:

notepad open dat and copy and paste

I tried that, looks like compiled code.:Graucho

.dat is a generic extension for binary data. There is no one program that can convert it into an ascii text format you could read. You would need a specific program designed to read the code thats output from whatever program created that .dat

i dont know what your trying to do but you could try opening it in the original program and see if there is an export to ascii or something in it.