Product key does not work

[Kandy]

I purchased microsoft office and student 2007 on line, the product key is not
valid what should i do?

 

[LVTravel]

I purchased microsoft office and student 2007 on line, the product key is
not
valid what should i do?

What is the error message when you type in the key? Where did you purchase
the program? Is it really Office Home and Student 2007?

Some times people do confuse B & 8, O & 0 when typing the key. Read it
carefully.