I just bought Fix-It Utilities 11 Professional from a local store and tried to install it. The directions seem simple enough. However, when I attempt to enter the serial number, I am not sure which number to enter as there are two numbers on the back of the CD sleeve. When I enter the first number it says it is not a valid serial number. There is a second number at the bottom of the sleeve that says it is a "serial key." When I try to enter it all of the numbers/letters will not fit into the space allowed. What am I doing wrong? I have tried entering both of these more than once, only to get the same results. Thanks for any help you can give.