I wrote how I am having trouble loading software to my computer via cd. I believe I am the administrator of my computer--I am the only user. When I load the statistic software disc, explore Windows 7 and select the disc and Windows asks if I would like to give authority to the software to alter my computer; I press yes; a popup window for the software shows that has a number of buttons like "Install"; I click install and it immediately says "There was an error executing the command E:/spss/setup.exe". Could it be b/c this is a copy of the program CD? I have not had problems with my other computers that loaded this fine in Windows XP. Is there something different w/Windows 7 for this? Also, I tried to load my graphing software (not a copy of the original CD), it loaded it and then when I tried to open the program (after restarting) it said to enter a valid keycode. I checked the keycode I entered several times and it was entered correctly. Frustrating that I have this new computer and cannot put software on it.