Xeon Cpu Fan How Can I Get My PC To Use All 8 CPU Cores Instead Of Just 4 CPU Cores When Running Boinc?

How can I get my PC to use all 8 CPU Cores instead of just 4 CPU Cores when running Boinc? - xeon cpu fan

I have a Skulltrail motherboard and have recently had a second processor. My hardware manager shows 8 CPU cores contained in transformers, but none of my programs seem to be able to see more than 4 CPU cores. How do I get my PC to the attention of the cores 4 more correct so that you can run Boinc 8 cores in place 4th
The system includes: --
X = 1 Case Zalman Z-Machine GS1000 Black Cool aluminum box Gaming Case E-ATX, 4x5.25 ", 6x3.5", Front I / O
2 x CPU FAN = Zalman CNPS 9700 LED Socket 754, 940, 775, 939 & AM2 CPU Cooler
1 X = Intel Skulltrail, i5400 Express 771x2 PCI-E (x16) DDR2 ECC / Non-ECC 800MHz, SATA II, SATA RAID, E-ATX
4 x 2 GB DDR2 RAM = 2GB STICKS PC2-6400 (800MHz), 240-pin Fully Buffered ECC, CAS 5-5-5-15, Lifetime Warranty
= 2 x Intel ® Xeon ® E5472 3.00 GHz Quad Core Processor 1600FSB 12MB
= 2 x XFX GTX 280 1GB Graphics Card PCI-Express graphics card
2 x SATA hard drives from Western Digital Raptor 150GB SATA-HDD 3.5
2 x SATA drives Velocoraptor Western Digital 300 GB SATA HDD 3.5 drIve
1 x power = Be Quiet! Dark Power Pro 1200W Power Supply
1 x Vista Ultimate SP1
1 x AG Neovo 19 "Monitor
1 x DVD-RAM drive