Thanks to both for the clarification. I will take a chance to test this more in detail with a couple of virtual machines (since I use Mac) perhaps tomorrow or as soon as I have some time; does the library I liked here and in the post solve the issue? I admit I tested it quickly (say 5 minutes or less) with Windows VMs, but at that time everything looked OK to me using that library, since the custom web fonts were disabled (and replaced with the closest similar web-safe fonts) on for example Windows XP with Clear Type switched off so avoid the bad rendering in those conditions.