As long as you are using Windows2000/XP, you can connect your Amiga HD to your PC and use WinUAE to access it.
You shouldn't do this if you are running an earlier version of Windows, as it will destroy your RDB.
You can also connect the PC's hd to your Amiga (that's what I did in the past, as the PC used for burning the CDs was running Win98). Use FAT95 from Aminet to access the PC hd.