If you are searching for a "verified download" because you cannot afford the new version, consider this: Autodesk offers a 30-day free trial of the latest PowerMILL Ultimate.
While it isn't version 10, the current software includes: download powermill 10 verified
Furthermore, Autodesk offers Flexible Pay-as-You-Go tokens for small shops. You can buy a day of use for roughly $15 USD. For someone who only runs 3 complex parts a month, this is cheaper and safer than risking a malware-infected "verified" download of PowerMILL 10. If you are searching for a "verified download"
PowerMill requires specific post-processors to translate toolpaths into code your machine understands (e.g., Fanuc, Siemens, Heidenhain). Cracked legacy versions often lack the ability to update or install new post-processors, rendering the software useless for specific machines. here is how to proceed.
Assuming you have a legal license file (.lic) or a physical dongle, here is how to proceed.