Hi KatManDEW, Welcome back to Amiga. I started on a ZX81 myself. Back in 1982. OMG 26 years ago.
If you want a better way of getting stuff off PC and onto Amiga you need to get a scsi CDROM and hook it into your SCSI chain. You've got a spot for it.. (o:.
Null modem is soooo slow.
Good luck
PS: Loopz is a great game. (o:
