I was able to find a another version of Genetic Species that was split up into .lha files. I won't say where, but you can find it in a certain place if you look hard enough. I unzipped the files within WinUAE (PC) and it created a Genetics folder with all of the files (the one that is the launcher is labeled in red as "Genetics." ). I made sure to choose the 3.1 revision 40.68 kickstart rom. It asked me to select the resolution, but after selecting low resolution under NTSC and the lowest possible dimensions, the emulated machine seemed to run out of memory. I know I'm almost there in getting this to work, but I'm wondering what I should do to these folders (maybe zip them up into a Genetic Species folder?) so that it can be read by one of the emulators successfully. If anyone has any more ideas, thanks for the help.
As far as Assasin - Special Edition goes, I used the same kickstart rom, but decided to delete the three .adf files it used in exchange for one .hdf file. It loads slowly, but it does seem to work. The original set seemed to be the wrong combination of roms, because the emulator kept trying to reload them until it brought me back to the game selection menu.