like you, I am a command line hater! I disliked shells since the Amiga days :-)
Luckily, modern GNU-Linux OS can be run absolutely without command line interfaces.
I have to admit though, that the CLI is the most powerful tool on GNU-Linux.
First, I would try whether your PC could boot the iBoot CD from tonymacx68.com .
If yes, you might succeed in installing Snow Leo. Some old ASRock and many newer
Gigabyte boards could be recommended for 10.6 and Apple´s software is only $29.
Tonymac has recommendations at his site.
If that is not an option, I would take a look at http://www.mandriva.com/en/downloads/free/
The Installer will usually set up a dual boot system with a bootloader for Windows and Mandriva,
as Windows is already on your HDD.
The Mandriva DVD is bootable, so you may take a look whether you like it, before installing.
Once installed with Windows on one HDD, it may be complicated to remove GNU-Linux again.
After installation, the emulators can be easily added to the system from Mandriva´s server.
No need for CLI here. The install is done with a nice GUI. There is a "Emulators" entry to select some.
Adding files to your system, you might also search for "ntfs" and "hfs"(without the quotes).
You can select the software to write to such files systems, in case you would like Mandriva to write on
Windows NTFS or Apple HFS drives.
By default you can only write to foreign file systems, if they are FAT formatted e.g. thumb drives.
Afterwards you can download a more recent SheepShaver from Cat_7 and inflate it on your desktop.
Only one Linux sytem file must be edited by copy/paste as written in the guide.
Pasting can be done like this: Select text with the left mouse button, place the cursor at the bottom
of the text file you have to edit, press middle mouse button, done.
Shouldn´t be a challenge for you.