After many download trials tried, I could not install the Bulgarian phonetic keyboard layout driver. It is not appearing in the menu of the keyboards (installed services) in the Control Panel > Regional and languages options - Settings > Language details. At the same time the standard Bulgarian layout is available there coming with the Windows-XP Home. Is there anybody who can give me any idea why? Thanks and regards.
Try downloading another package because it seems this application has been discontinued from development. Make sure to download the installer first and then the layout. You can find both downloads on the same page.