I FINALLY bought Microsoft Windows. With all of those great new programs being written for Windows, I had to take the plunge. However, I've just been told that all of my DOS programs will have to be upgraded to their Windows versions. I've been told upgrading translates into spending more money. Tell me this isn't so. Fred Lam Sha Tin It isn't so. Well, for the most part, anyway. Windows is a picture-orientated program that protects users from having to delve too deeply into the cryptic world of DOS commands. In addition, the DOS programs can't use Windows' TrueType fonts, or the Windows clipboard. TrueType is a standard for displaying and printing characters which maintain a smooth appearance, no matter what size they are printed. Transom, a new product from Metro Software, gives most of your DOS programs access to several Windows features, including TrueType and the Windows clipboard. When you run a DOS program from Windows, Transom links it to the Windows print manager. Transom could pay for itself by saving you the cost of buying or upgrading to Windows versions of your DOS programs. Windows' spooling feature lets you continue to work while the information from your DOS programs is being printed. Transom works with Windows 3.1 or higher and sells for US$129 (about HK$1,010). WE do a lot of printing on our Macintosh, and we go through those expensive laser toner cartridges like crazy. Using a refilling service saves us a lot, compared to buying new cartridges, but it's still very expensive. Can you suggest any other way to cut our printing costs? Norman Winton Happy Valley Seems to me that if you used less of the toner (powered ink) on each page, you could extend the life of the toner supply in the cartridge. This rational occurred to the folks at Working Software, as well. Enter Toner Tuner. This little printer program modifies the Mac's laser printer software. With Toner Tuner, a new control is added. By sliding a bar to the left or right, you can increase or decrease the darkness. Because Toner Tuner will work with most PostScript and QuickDraw printers, this means longer life for printer ribbons, too, as well as toner and ink cartridges. Toner Tuner sells for US$49.95 (about HK$390).