1. Don't know if they're nosy... but they do load games at rather fast speeds... so good in gaming.. if your impatient
2. Look for a LGA 775 Mobo that supports Intel Core 2 Duo.. they use ddr2 and usually have a standard of ddr2 800
3. Raid 0 i think is data stripping, sorta splits data between the two drives so it access much faster drawing from 2 seperately or something of the sort... and yes, raid 1 is more for protection, data mirror... hope i got all that right
4. no, that t.v. tuner card will work just fine, as you said as long as you got a free pci slow...
Intel 3770k @ 4.4 GHZ | Galaxy GTX 770 SLi | 16 GB G.Skill Sniper | ASrock z77 Extreme4
2xSamung 840pro 128GB in Raid | 2x1TB Seagate | Antec 750 Watt GamerSeries
Intel Core i3 3220 | Galaxy GTX 650 | 8 GB Corsair Vengeance | ASrock B75M | Samsung 840 120GB