You have three options.
1. You can send the software to Amiga by using null-modem cable and Amiga Explorer software by Cloanto.
2. You can format 770k double density floppy under MS-DOS, and use this to transfer data between windows and workbench using crossdoss under workbench
3. You can read/write to Amiga formatted harddisk on PC using WinUAE