OK, I'm just getting straight dumb here...
I just tried the flash_image line you gave me before again and it worked, so I'm assuming that the v9recovery.img is going to be what pops up when I us LG to flash to VC.
So, do I flash it to VC or do I open up recovery to get TR1.7?
Long time ago you started with VC Recovery, VC Android and VC Radio.
Medium time ago, you force flashed V9 Android, leaving you with VC Recovery, V9 Android and V9 Radio.
Just now, you flashed V9 Recovery, leaving you with V9 Recovery, V9 Android and V9 Radio.
Once you use LG Software Updater to flash to VC, then you will have V9 Recovery, VC Android and VC Radio. The reason you want to update to VC before installing ThundeROM is because that is the way you get the VC Radio. If you just installed ThundeROM prior to that, you wouldn't get the VC Radio.
So to answer your question, you use LG Software Updater to update to VC, then you can follow any of the stickied directions to root, install custom recovery, and/or install ThundeROM. You can even use the software automated tool here:
http://forum.androidcentral.com/lg-...enter-1-1-001-no-longer-need-android-sdk.html