"In your screenshot, are you indicating that the highlighted repo could be used to update 2010?"
before i installed pclinux 64 bit rc1(i wanted to have a 64 bit os running), i was using any of the repos available to update my install, i installed this netbook with pclinux 2010.1 iso, back in october 2010 and ran it happily until last month
if you try to update your current install, that hasn't been updated since that year with that or any other repo, you will kill it or leave it mostly non functional, forcing you to take the only action possible, install a new pclinux version from the new pclinux 2013.02 iso
as you see, if you keep a install updated, you won't need to reinstall it but if you leave it untouched for 3 years, well, you won't have much options
"And what did you mean by 2010 being the "last true release of the 32 bit version" - I thought 2013 was the first available as 64bit?"
64 bit is not ready yet, we are testing rc1 at the moment and is doing very well, in a couple months there could be a final version
pclinux is a 32 bit distro, it can be used on 64 bit hardware so this is not a issue for most users but since 64 bit seems to be the future, well, here we are, using a release candidate version of it
next release could be available in both 32 and 64 bit version
"I wasn't aware that Cups or any other app/function was time limited and would cease to work! They may become dated but not non-functional."
if the printer you have, doesn't work with the cups version made in 2010, it doesn't mean that it stopped working, it means that it is not supporting the printer yet or has problems with that particular driver under that particular version on that year, and you need to update cups or get a ppd file, possibly other files too, details vary from printer to printer
"sounds like an endorsable offence (perhaps carrying a prison sentence)!"
again, not telling you what to do, but pclinux requires constant updates as the rolling release distro it is and if you don't make them for 3 years, well, what can we do other than tell you to download a new iso?
now, we are insisting too much about the topic, maybe we could move forward and help you with he new iso and the printer you need to use?