Using convolver universally in HTPC

I've been reading the forums for a while now, but I can't find an exact answer here or anywhere else. I'm trying to setup my HTPC to do software room correction for anything that comes out of the soundcard. This thread is the closest thing to an answer I've found:

http://www.hometheatershack.com/forums/rew-forum/3589-rew-w-software-eq.html

Is anybody successfully doing this? I'm still working on assigning filters for my sub's impulse response. However, I won't know if I did it right unless I find a way to measure the corrected response.

Here's my plan:
1. Choose 'Virtual Audio Cable'- VAC (shareware) as the output for REW.
2. Use ConvolverVST (free) in VSTHost (also free). I should be able to select VAC as the input and my soundcard (SB Audigy 4Pro) as the output.
3. Verify my REW filters and tweak as necessary.
4. Once I'm satisfied with the room correction, I'd set all of my applications and Windows to output to VAC--> ConvolverVST in VSTHost--> Soundcard.

You'd think someone has already done something like this. It seems like the most eloquent solution, since:

• it's possible to apply filters to the full frequency range
• I'd be able to use room correction for streaming audio, DVD-A :bigsmile:, etc. instead of just Zoomplayer and JRMC.
• It would be cheaper than a hardware solution and could be used in a car pc setup as well

Can anyone help?