"... Only copies of the year-old operating system that are sold in boxes directly to consumers are affected by the price cuts _ not the versions pre-loaded on personal computers. The cuts will range from 20 percent to 48 percent.
The reductions are to coincide with the late March release of Vista Service Pack 1, a collection of security fixes and other improvements.
Microsoft said the new prices will apply to the Home Premium and Ultimate versions of Vista, in both their full editions and the editions that upgrade an older or more basic operating system."