editing my hardware config settings

I have looked through my .config file in /Boot; I noticed the USB to Serial entry is set to "m" and the serial adapter (pl303) is "not set". the system can "see" the adapter, but not initialise it.
How can I change this and hopefully get my adapter working?

 

so far I have had 53 views and no replies - I'm clearly not unique, but where are the Gurus?

 

Perhaps most of the viewers are trying to find out what hardware config files you're on about. The subject is a bit generic: people looking for help with any sort of hardware problem might click on it - or people like me, who are just curious to find out what config files other people have found and modified.

So, lots of views, but no-one even saying they have the same issue (whatever the actual issue is - I frankly don't understand what is wrong and what you're trying to achieve) could well mean that you *are* unique!

 

Well, I'm trying to get a USB to Serial adapter working under Linux on the Aspire.
I looked through the .config file in the /Boot directory, but my limited knowledge of Linux (and the warning on the file!) tells me I should not be attempting to edit this file.
My question is, as this file shows the USB to Serial Adapter setting is set to "m", and the particular adapter I use (a pl303) is set to "not set", where is the .config file I need to edit to enable the USB to Serial adapter, and what settings should I be using?
Thank you for your time.