This is a discussion as old as time itself, so I use a solution as old as time itself: a filthy old serial cable, and a wee tool from Aminet called EasyTransfer. The Amiga-side app is small enough you can fit it on a 720K formatted PC floppy, once it's there it can establish a connection via serial and you're away. Run at 33600 or you'll have dramas unless you get a high speed serial port in the Amiga.
Alternately there's floppy drive emulators, hardware like the Catweasel to give the PC legitimate Amiga read/write capabilities (use this with WinUAE), CF cards via CF to PCMCIA adapters or full blown networking. Admittedly I've got a network card in my A1200 (want one cheap? Look for the 3Com Etherlink III PCMCIA, part 3C589, all variants including combo cards work) and have Miami for TCP/IP, but haven't gotten to the point of actually configuring the Amiga for SMB... or finding out if the Amiga can actually do SMB
Any questions or want to shoot the breeze about dicking about on Amigas, hit me up. The 1200 is and remains my favourite all time classic, and is the centrepiece of my whole collection.