Good news for companies looking to refurbish and resell their dust-collecting PCs.  Microsoft has broadened its refurbishing rules in order to give outfits with heaps of not-quite-antiquated computers a way of offloading them with genuine copies of Windows XP. To be more exact, Microsoft said it is offering a new license for refurbishers that is only available through the MAR (Microsoft Authorized Refurbisher) program. Windows XP Home for Refurbished PCs and Windows XP Professional for Refurbished PCs are the two operating systems available and the PCs that are being refurbished need to have a Certificate of Authenticity. Essentially, Microsoft is attempting to make the lives of those looking to deliver preinstalled Windows XP licenses on refurbed rigs a bit easier, but of course, there's a pretty rigid list of requirements that you'll have to meet before the MAR welcomes you in. The extended program is currently open to Microsoft's A-list OEM friends worldwide and to other refurbishing partners in North America.