Well, having found my Modules page (thank you for the answers to that question) I have set about updating the modules on this Drupal site.
I'm using drush to do it so it's mostly pretty simple, however I'm now left with a few modules that say "Not supported!" on the Modules page in Drupal and about which drush says "Installed version not supported".
They are the following:-
Legal 6.x-2.2-beta4 6.x-8.5 Installed version not supported Login one time 6.x-1.3 6.x-2.7 Installed version not supported Service links 6.x-1.0 6.x-2.0 Installed version not supported
If I ask drush to update them (it seems that it will, I tried it to see what would happen but stopped it before it actually did the update) is it likely that all will be well? It doesn't look as if they're particularly old versions.