i am looking forward to building a new rig. i have not tainted myself with dual processors yet, but am now ready to accept it and never look back to single-proc rigs. im not looking for specifics on motherboards and processors yet, just the benefits of having the 2nd processor and ram. as i have been working full time and schooling full time the last few months, i have forgotten a lot of random computer info i used to have. so if i could ask for a pro and con list that all you dual proc guys have run into, that'd be great. looking forward to hearing about gaming especially! specific questions: 1. would i be able to run 2 operating systems at the same time? both with programs running? 2. does the 2nd processor get used only if the first is full, or do they equalize and both take pressure? 3. are there any cool tricks with dual-procs rigs that you cant do with single-proc rigs? if this doesnt work well for gaming, would a new 64bit single-proc rig be better for gaming? or would i be better off adding another gig of ram to my current system and getting a higher end video card?