How much do you want to spend on this? (other than as little as possible)

I'm willing to spend about $200-$250 on this.

The "remote PC" solution you're suggesting is good, but not an option for me since I really don't have the room to put the PC somewhere else.

if you manage to get a new fan for your noisy display card, they are generally quieter than the factory installed cheapies

Yeah, I know. I believe I WILL try such a Zalman Cooler. I've looked on the web and I haven't found anything but positive reviews.
But to be sure that my Gforce card doesn't get scorched, I will add this little thingie to my PC. (review here)

Modifying your case to minimise turbulence and rubber mounting case fans helps too

I know, that's why I will be adding that "powersnooze" noise absorbing material on the inside of the PC. I figure (hope) that will be a solution to the tubulence.