It's not really hacking if you aren't pulling out all the stops, is it? IOW, there's no such thing as "cheating" when it comes to hacking.
I'd suggest getting one of the bigger certifications, like a CCNA. My CCNA is lapsed, and has been for a decade now, but I put "former CCNA" on my resume, and it seems to trigger whatever resume-scanning apps the larger corporations are using. I've done IT for some small shops, where it was a matter of knowing someone who knew someone, and some larger shops, where it's a matter of the software triggering on "CCNA" and handing it off to a live person. And once the recruiter comes calling with phone and in-person interview opportunities, it's what you know, not how formal a setting you learned it in.
How about you actually TRY the app? If it's good, go ahead an give it a favorable review, but include full disclosure that you're an employee. That way there is no question of whether you're astroturfing or not.
I've tried A LOT of PVR software over the years, and MythTV (via Mythbuntu) is what I'm currently using. That said, if you're looking for a Windows solution to run under XP, I found GB-PVR to be about an excellent choice. There are a ton of plugins available as well, so I'd say it is at least as full-featured as MythTV. If you insist on running Windows on your PVR, you could do much worse.
*disclaimer* I've not tried Media Center under Windows 7. I did try it under Vista and found it somewhat lacking.