You in the US?
(Oh, you said you were in the US. ;-)
PM me and I think I can help you out.
As for PC to Amiga on 1.3, I use DOS2DOS without problems, but I rarely need it.
I usually use a serial cable and transwarp on the Amiga (and ADF Sender Terminal on the PC) to send images from the PC to the A500.
desiv