Just use SearchR3 for Windows. You can find it here on the site.
SearchR2 is DOS command line based. You don't know how to use a command line program. That's your problem with SearchR2 from your description.
I am positive that searchr
2 is not command-line based. I used it alot back when I was using Win98.
It doesn't appear to work on Windows XP, or DOSBox (I tested with v0.63).
I suggest WindHex.