Weird! Not you hedwar, but the results of doing that! Did what you suggested and it started printing...for half a page! Then stopped again and it's back to the 'USB not recognized (Error code 43)' message. Have seen suggestions that I need to uninstall/reinstall the drivers, but, as you'll know, they're already in the database (supposedly) in Windows 7 and I can't find any references to them to do anything with anyway.
Thanks for your help so far.