All my programs that I was using under Windows ME I have been able to install and run under Windows XP. To name a few: Quicken, TaxCut, Microsoft Streets & Trips, Norton SystemWorks, Microsoft Office 2000, as well as many others. The Office 2000 includes Word, Excel, Access, PowerPoint, Outlook and I haven't had any problems running any of them under Windows XP Professional. The only problem I encountered after installing XP was when I tried to restore my files that were backed up using MSBackup under ME. That has been a frustrating hassle to go back and retrieve my old files. Fortunately, I had also been backing up my quicken files with the backup feature inside Quicken, which were easily restored under XP using Quicken itself.