Help upgrading first build

Hi first of all, let me thank everyone here for all the help. After over a year of planning and saving I have finnaly peiced to gether my first build, and I am completely addicted. right now I have this set up.


Monitor:
52 inch sharp LED HD TV @ 1080p

cpu
I7-950 @ stock speeds

memory:
12 Gb(6x2) Gskill @ 1333 9-9-9-24

mobo:
Gigabyte-x58A-ud3r

Optical
LG Blu-ray burner

HDD:
500Gb samsung

case:
thermal take armour +mx half

power suply:
750 antec eathwatts

os:
Windows 7 64 bit

If any one has any settings I should change to get the most out of my rig, please post it, it would be greatly appreciated. I havent messed with the OS settings much and havent touched the registry or anything technical. I also am debating my next upgrade. I want to get an SSD for the OS and was confused about trim with raid and such. Running at 6gb/s I know there have been some speculatios that the chipset sucks. Is that true/proven, also would it be faster to run two say (Crucial ReAL SSD's) in raid 0 is trim still an issue (I cant find an up to date review). I am also having a problem playing blu rays. They are all jittery when I try to play using power DVD 8 (the free version that came with the lg bluray drive) do i need to register this? or is it a problem with my hardware? or do i need a different software alltogether. Thank you all so much again i appreciate it.