I'm a little confused about this. Say for example, I download a disk copying utility from Aminet. How can I move the program from my PC to my Amiga? I would imagine you can't do it via floppy, since the two computers use different floppy formats. What other options are there?
WB 2.1 or higher can read 720k formatted dos floppies as it comes included with a nice software piece called crossdos. For wb 1.x you have some freeware called messydos, which basicly does the same thing as crossdos. The only problem with 1.x, is that you first need to transfer it over to you amiga using a pc+software and a null modem cable. If you are going the null modem cable route, then i strongly recommend this software:
http://www.amigaforever.com/ae/AmigaExplorer is also included in the amigaforever package if i recall correctly.
The best way would of course be to have a cdrom or similar.