I recently purchased a legitimate copy of Office 2007 Professional plus, and installed it on my computer with no problems. Last week I bought a new computer, which came with Vista installed. (My old computer operated on Win XP. Now whenever I use it, my new computer tells me that my product code for Office is invalid and will stop operating after I have used it 25 times. Can anybody please tell me how or if I can resolve this problem? Thanks in advance, John.

I don't have the product so did not dig deeper but it would appear that the License Terms set by MS allows for only a single installed copy. See http://forums.pcper.com/showthread.... for an understanding. It suggests that you will need to uininstall the product from one of the PCs. See http://office.microsoft.com/en-us/p... in order to download and view the applicable License Terms for the exact product you are using of Office 2007 according to MS. Click on the appropriate link under "Retail products" HTH Bryan

Thank you for your advice. I went to the link that you suggested and discovered that if I removed office completely from my old and my new computer, and then re-installed it again on my new computer, the product key was reactivated. Everything is now working fine. Thank you once again. John.