I have installed Microsoft Office 2007 Standard Suite on one machine (OS: Window Vista) and since I needed Microsoft Access as well, I bought a MO Professioanal 2007 package an add only the access software to my machine, avoiding updation of all other softwares on my machine. Now I tried to install the rest of the software from MO Professional on another machine (Windows XP)-(excluding Access), but the installed office does not pass the Genuine Validataion test. Did I do something wrong. Thanks.