When it first popped up last week the download link for DIRECTV2PC returned a 404 error. But not the download link for the CyberLink PC software is active.
The system requirements call for a fairly modern PC. The software only runs on Windows Vista or XP SP2. A dual-core or quad-core processor is recommended. A minimum of 512MB of RAM is required, and 1GB is recommended. But what may be the sticking point for many users are the video card requirements, you need a minimum of 512MB of video RAM, and 1GB is recommended. Sounds like this is a fairly GPU-intensive application.
The download page is for the DirecTV PC Playback Advisor. The application will test your PC to see if it meets the minimum hardware requirements. If so, then you can get the full DIRECTV2PC application for free.