Hi, I've just downloaded Visual Studio 2008 Professional Trial version and installed it. Everything was fine except that I can't put the serial number after installation. Normally I'll activate the product by going to Control Panel > Add or Remove Programs then select the program. Then a window will appear where you can enter the serial number. I was able to do that until Windows Vista. Now whenever I open that, the serial field is gone. Just Uninstall/Repair/Modify options are there. Any fixes? Thanks for all your help.