I bought a Dell computer last November 2006. Windows XP installed - ready\nfor Vista upgrade. I jumped thru all their hoops, payed for shipping, and\nrecieved Vista upgrade cd. One major reason I bought a computer then was the\n"free"? upgrade. I had not tried to install it yet - Fear of a crash, XP\ngood, don't have the time with work, a newborn, etc... I tried to install\nit this weekend because I had just backed up everything important after a\nvirus that halted my internet connection for a week. Spent two hours getting\ncomputer back onkline & working - Dell tech tells me I should go ahead &\nupgrade to Vista. I ran the Upgrade assistant then loaded Vista Upgrade\ndisk. Almost immediately it asks for the Product key. I enter the key, then\ntold its invalid. Call Dell & was told I had to Run Upgrade to Vista by\nApril - now he says the product key is useless, not able to register with\nMicrosoft, and I will probably have to buy Vista if I want it now!!!! Hung\nup before I blew a gasket on the tech. Will never buy a Dell again. Can\nmicrosoft help? Or should I just buy a Mac next?