I have been trying to make an .exe file that I have become more automated by using Mathematica, but I am having trouble getting it to work. The file is based in command prompt and I basically need to do:

1. Open program
2. enter string
3. press enter key
4. enter string
5. press enter key
6. enter string
7. press enter key
8. press enter key

I do not need any of the output from the program since it is making a new txt file for me which I will read separately. I do not know how to go about "pressing the enter key" or even inputting the string I need to. I can get Mathematica to open the file with SystemOpen[], but I can not get it to enter anything through Mathematica itself. Let me know if you need anymore clarification!