Windows 7 - Dell XPS 430 Upgrade

Hi
All 7 forum members
I have a dell xps 430 in the bios it says,
Ram 6.0 GB total
1066 MHz
dual symmetric
DDR3 sdram
Dimm 1.2 GB
---- 3.1 GB
---- 2.2 GB
---- 4.1 GB
CPU-Z says
pc3-85oof {533 MHz}
I am thinking about going to 8 GB total PC3-10600 DDR3 1333 MHZ .
I have read somewhere that this will work, i know i will have to remove
all of the ram i have now because it is clocked at 1066 MHz
will this bring my windows score of 7.1 up to about 7.3 or better ?
and would this not {deactivate} my windows if i do this ?
I have never added any new hardware to my system .
But at the same time i want to go to a better CPU what I now is,
Processor 1 ID = 0
Number of cores 4 (max 4)
Number of threads 4 (max 4)
Name Intel Core 2 Quad Q8200
Codename Yorkfield
Specification Intel(R) Core(TM)2 Quad CPU Q8200 @ 2.33GHz
Package (platform ID) Socket 775 LGA (0x4)
CPUID 6.7.7
Extended CPUID 6.17
Core Stepping M1
Technology 45 nm
TDP Limit 95 Watts
Core Speed 1994.9 MHz
Multiplier x FSB 6.0 x 332.5 MHz
Rated Bus speed 1329.9 MHz
Stock frequency 2333 MHz
Instructions sets MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, EM64T
L1 Data cache 4 x 32 KBytes, 8-way set associative, 64-byte line size
L1 Instruction cache 4 x 32 KBytes, 8-way set associative, 64-byte line size
L2 cache 2 x 2048 KBytes, 8-way set associative, 64-byte line size
FID/VID Control yes
FID range 6.0x - 7.0x
Max VID 1.175 V
i really have no idea about what CPU i can get for my xps 430 to make it better than what it is now ,
the bigger the better is what i want to go to !
my score for it is 7.1 .
Doing 2 upgrades just might deactivate windows so i will do the ram first and Waite for awhile to do the CPU if you think my windows will stay {active} i will do the 2 upgrades !
I hate to call MS to get WINDOWS working again !!
Your Help would be wonderful!
Thanks for NOW !!