Well, I believe I'm done. I did do a fresh install on an old XP unit I have here that isn't even used for gaming under normal circumstances, its a pretty barebones install. It let me activate the key, and then proceeded to completely crash every time it was launched. being thoroughly demoralized at that point I worked on my main rig further, here is what I did:
Did a Clean Boot - just in case something was conflicting with Either DCS or Standalone A10C, this was ineffective.
Ripped the .reg entries again. No progress.
Booted into Safe Mode and attempted to launch the Standalone version...It launched the Protect.exe file without error! I registered! I attempted the DCS World version....and it threw an invalid hardware code error. Referring back to the forums I ran the registry rip again...and it totally lost the key and started kicking back with the Invalid Serial Key error again. Re ran the stand alone registration, and a new hardware code came up....and I got the invalid hardware code error again.
I could write more, but I believe I have wasted more than enough time on this "Product". I didn't pay for Beta grade software. I will be pursuing a refund through Gamefly this evening. I will also lodge a complaint about this company with them, though clearly DCS could not actually care any less - I never actually did receive any acknowledgement of my issue from DCS.
If I sound like I am being harsh - Good. I feel pretty harsh. I've wasted a huge amount of time on this game, and I bought a HOTAS setup for it as well, so I'm feeling pretty harsh. The HOTAS works at least, so I'll give it that. Thankfully it can be used in MWO and a few other games that actually register when you legally purchase them. In the end, for anyone reading these forums prior to purchasing a DCS Product, I have these simple words of advice: DON'T DO IT.