Great tip! Wish I'd have known about it when I was trying to decipher 'labourer breadmaker biscuit factory', where my great grandad worked - took me months to get it!
Just in case it's not mentioned on the restoration site, a great free graphics package is called 'The Gimp' - you shouldn't be put off by the name, but the front end is a bit clunky, so it might not suit less experienced PC users. You can download it free from download.com, or another reputable download site.
Graeme