Be extremely cautious when downloading files from sites promising "free product keys." or run an .exe file from an untrusted source to "activate" your software.
Since Office 2007 is no longer receiving security updates, using it on a computer connected to the internet can be a security risk. If you cannot find your original product key, consider these modern, safer alternatives: microsoft office 2007 product key 100 working link
Do you have the (CD or ISO file), or are you also looking for a way to download the software itself? Be extremely cautious when downloading files from sites