Hi wiser3, and sorry for the inconvenience.
You can run ROMFind from your Windows startmenu or from it's folder in AmiKit XE/ROMs as you figured it out.
While it is OK that ROMFind didn't find anything in the ZIP archive (as it cannot look inside the archives), it's strange it did not unpacked ROM or any other version you provided.
Here, with AmigaForever 8 installed, right after you click Search button, the "KS ROM v3.1 (A1200)" is found in C:\Users\Public\Documents\Amiga Files\Shared\rom folder. It's named "amiga-os-310-a1200.rom"
I also tried to point ROMFind to a folder with kick.a1200.46.143.rom (from Amiga 3.1.4 package) and it was found and identified as "KS ROM v3.1.4 (A1200)".
Anyway, you figured it out and placed your rom to AmiKit XE/ROMs and renamed it kick.rom - exactly as AmiKit Quick Guide states. Feel free to check the document for more details including instructions on where to copy WHDLoad ROMs.
By the way, if I may recommend the OS for AmiKit, use the ROM from AmigaForever8 ("amiga-os-310-a1200.rom") and then install AmiKit with the "AF installed" button when it asks for the OS. The Amiga Forever 8 must be installed on your Windows, of course.
Hope it helps,