derekfI am half way through the whirlpool link,
jhend he knows what he is talking about. Very enjoyable reading, here are these vital commands I would have expected in a manual, wonder how they got them.
This has become an educational exercise for me too now, picking up answers to small thought creeping in.
In your case as I see it, AS brought you to the stage where
ttyUSB0, ... ttyUSB3 are available.
Then any terminal emulator should be able to step in with the right configuration, since ttyUSBx to be used it seems that configuration is not 'tight' ie it should be easy loosely spoken. In that case Putty may be fine.
Downloading and installing PCLOS rpm's via helper PCI did not realise you had two pc's to use, great. Am I to understand however you intended to use a Windows system to download the other software?
I would like to assume you may have a PCLOS liveCD handy in that case and run that on the Lappy? If luck should have it that you already run PCLOS on the lappy then it could be even simpler.
What I am getting at there is a way to download the correct PCLOS rpm for minicom, gtkterm etc then copy that to the desktop and install, this way the nagging doubt that the install may have caused problems if it does not work.
Can I invite somebody to help out with my thinking above? I was going to suggest using livecd, go to Synaptic and configure so that rpm's are left in cache. Then after installing say gtkterm, copy the rpm from cache to USB stick for transfer to another pc? I am bracing myself to be embarraced, so chirp in

While I wait on your response,
derekf I will finish reading the whirlpool thread and make notes and somebody may have added comment on copying an rpm.