If you purchased them prior to the sale of Impulse to GameStop then they should already be registered on your account here. Shoot support@stardock.com an email and they should be able to help track down the problem.

They should... but when I open the game and try to click "metaverse" it tells me there's nothing in the registry x.x

Figured it out, deleted sig.bin in regular gc2 folder + C:\ProgramData\Stardock\Twighlight and used that whole gc2ulitimate.zip download / extracted into the Wighlight folder. Hooray now stardock account registration is finally showing up. (Funny this happened to me in November of 2011 and it's STILL an issue with everyone lol...)

I just wanna say that deleting sig.bin solved my problem.  My debug.err looked like this:

Debug Message:  Version v2.04 Twilight of the Arnor last updated on: Tue Nov  1 12:59:59 2011
Debug Message:  Checking DX Version.
Debug Message:  *********DXDiag info follows.*********
System Info
Time: 7/22/2012, 17:59:55
DirectX Version: DirectX 11
Machine Name: KEIFU-PC
Operating System: Windows 7 Home Premium 64-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_gdr.120503-2030)
Languages: English (Regional Setting: English)
System Manufacturer: Alienware
System Model: Area 51
BIOS: Default System BIOS
Processor: Intel(R) Core(TM) i7 CPU         960  @ 3.20GHz (8 CPUs), ~3.2GHz
Physical Memory: 6144MB RAM
Page File: 3561MB used, 8706MB available
Windows Dir: C:\Windows


Display Info
Display device 1:
Device Name: \\.\DISPLAY1
Card Name: NVIDIA GeForce GTX 460
Manufacturer: NVIDIA
Chip Type: GeForce GTX 460
DAC Type: Integrated RAMDAC
Key Device: Enum\PCI\VEN_10DE&DEV_0E24&SUBSYS_083D10DE&REV_A1
Display Memory: 3789 MB
Current Display Mode: 1680 x 1050 (32 bit) (60Hz)
Monitor Name: Acer LCD Monitor X203W
Monitor Max Resolution:
Driver Name: nvd3dumx.dll,nvwgf2umx.dll,nvwgf2umx.dll,nvd3dum,nvwgf2um,nvwgf2um
Driver Version: 8.17.0013.0142
Driver Date: 5/15/2012 06:48:00
DirectX Acceleration Enabled: Yes
 


Sound info
Sound device 1:
Description: Speakers (Realtek High Definition Audio)
Default Sound Playback: Yes
Default Voice Playback: Yes
Hardware ID: HDAUDIO\FUNC_01&VEN_10EC&DEV_0888&SUBSYS_102802F8&REV_1001
Manufacturer ID: 1
Product ID: 100
Driver Name: RTKVHD64.sys
Provider: Realtek Semiconductor Corp.
Driver Version: 6.00.0001.6039
Driver Date: 2/2/2010 22:36:58
Type: WDM
Other Drivers:
Acceleration Level: 1
Cap Flags: 0
Min/Max Sample Rate: 0, 0
 
Sound device 1:
Description: Realtek HDMI Output (Realtek High Definition Audio)
Default Sound Playback: No
Default Voice Playback: No
Hardware ID: HDAUDIO\FUNC_01&VEN_10EC&DEV_0888&SUBSYS_102802F8&REV_1001
Manufacturer ID: 1
Product ID: 100
Driver Name: RTKVHD64.sys
Provider: Realtek Semiconductor Corp.
Driver Version: 6.00.0001.6039
Driver Date: 2/2/2010 22:36:58
Type: WDM
Other Drivers:
Acceleration Level: 1
Cap Flags: 0
Min/Max Sample Rate: 0, 0
 
Sound device 1:
Description: Realtek Digital Output (Realtek High Definition Audio)
Default Sound Playback: No
Default Voice Playback: No
Hardware ID: HDAUDIO\FUNC_01&VEN_10EC&DEV_0888&SUBSYS_102802F8&REV_1001
Manufacturer ID: 1
Product ID: 100
Driver Name: RTKVHD64.sys
Provider: Realtek Semiconductor Corp.
Driver Version: 6.00.0001.6039
Driver Date: 2/2/2010 22:36:58
Type: WDM
Other Drivers:
Acceleration Level: 1
Cap Flags: 0
Min/Max Sample Rate: 0, 0
 


Debug Message:  *********END dxdiag info.*********
Debug Message:  Entering WinMain
Debug Message:  ******* Starting Game Shell *******
Debug Message:  Going Fullscreen
Debug Message:  Preparing to change display settings.
Debug Message:  Using hardware vertex processing
Debug Message:  Using multilsample setting: D3DMULTISAMPLE_8_SAMPLES
Debug Message:  Attempting to create D3DDevice at resolution 1680 x 1050, Windowed: 0, Multisample: 8
Debug Message:  Game Resolution: 1680 x 1050
Debug Message:  Running fullscreen.
Debug Message:  HAL (hw vp): NVIDIA GeForce GTX 460
Debug Message:  D3DPRESENT_INTERVAL_DEFAULT
Debug Message:  Refresh rate: 60
Debug Message:  Bit Depth: 32 bit.
Debug Message:  *********Checking D3DDevice Caps***********************
Debug Message:  A full-color cursor is supported in hardware at high resolution modes.
Debug Message:  RGB in format 6:6:6, Masks reported as ff0000:ff00:ff
Debug Message:  Now Fullscreen
Debug Message:  Shell initialization complete

With the Steam sale on, I just wanted to make this as visible as possible.  Thanks webnavigator!