Hi Ron,
Please look at http://www.gsimple.eu/faq.html (Frequently Asked Questions).
To quote it here:
Q: I executed GSinstal but I can't find gsimple.exe?
A: You propably executed (double-clicked) gsinstal.exe from within WinZip, that is without unzipping all the files. There is a file called gsimple.ex~ in the files you have downloaded -this is an "archive" where all the nesessary files have been joined into one. Gsinstal.exe extracts gsimple.exe and all the other files. If it does not find it, it does not extract anything!
I hope this will resolve the problem