According to his own admission GSMp2k lives in the "United States" in a "Huge Underground Compound".
Taking into account there are very few huge underground compounds in the United States, (or for that matter, people who can fund building one) I quickly narrowed down the possible locations for GSMp2k's domicile.
1.) NORAD: Cheyenne Mountain Directorate
Location:
"The Cheyenne Mountain Directorate is located at Cheyenne Mountain Air Force Station (CMAFS), a short distance from NORAD headquarters at Peterson Air Force Base, Colorado Springs, Colo."
http://www.norad.mil/
2.) Area 51 or Area 19
Location:
"The Groom Lake Base is this top-secret military base located 90 miles north of Las Vegas (which is in Nevada). It's in grid number 51 of the Nevada Test Site, so it's called Area 51."
"Area 19, along with Area 20 to its west, were added to the Nevada Test Site (NTS)Yucca Flat was a little too close to Las Vegas for the shockwaves created by the bombs. It was an ideal place to do underground testing."
http://www.area51zone.com/
3.)KRQE (Church of Scientology)
Location:
"Buried deep in these New Mexico hills in steel-lined tunnels, said to be able to survive a nuclear blast, is what Scientology considers the future of mankind,"
http://www.washingtonpost.com/wp-dyn/content/article/2005/11/26/AR2005112601065.html
4.) Mount Weather (FEMA)
Location:
"Mount Weather is virtually an underground city, according to former personnel interviewed by Pollock. Buried deep inside the earth, Mount Weather was equipped with such amenities as:
- private apartments and dormitories
- streets and sidewalks
- cafeterias and hospitals
- a water purification system, power plant and general office buildings
- a small lake fed by fresh water from underground springs - a transit system
- a TV communication system
The facility is the operational center - the hub - of approximately 100 other Federal Relocation Centers, most of which are concentrated in Pennsylvania, West Virginia, Virginia, Maryland and North Carolina. Together this network of underground facilities constitutes the backbone of America's "Continuity of Government" program. In the event of nuclear war, declaration of martial law, or other national emergency, the President, his cabinet and the rest of the Executive Branch would be "relocated" to Mount Weather."
http://www.crystalinks.com/underbases.html
Take your pick Yahtzee, burning down his house seems to be a quite recalcitrant task though. Personally I wouldn't want to go against the U.S. Military or the Church of Scientology but
its your choice, have fun.