I have recently gone for a battery powered solution and here is my blog about it
http://brendanmitchell.net/?p=465
That runs all my equipment without blinking an eye
Approximate power draw at the moment is 4amps per hour so on a normal night thats about 40amps draw on 105 amps
So after a full nights imaging ill be sitting at about 62% power and at a push i could run it for two nights straight and deeply discharge the battery to about 24% but thats 20hrs of running cameras, laptops and mount.
If you want to find yourself out in the woods for weeks at a time, grab a small 1Kva genny (pure sine wave) and during the day charge your battery up. If your going out for two days just get a secondary battery. easy to do!
Oh and i run a eeepc which is native 12Volt all the cameras are 12V and of course the EQ6 is 12V so i have no step ups or step downs or inverters in my system!