Windows 7: How can i upgrade my os(windows 7Home premium 64bit) in to Ultimate

OS Windows 7 Home Premium 64bit

Computer type PC/Desktop
System Manufacturer/Model Number doofenshmirtz evil incorporated
OS Windows 8 Pro
CPU Intel Core i7-3970X Extreme Edition
Motherboard ASRock X79 EXTREME11
Memory 32GB (8x4GB) Corsair DDR3 Dominator Platinum
Graphics Card 2x 3GB EVGA GTX 660 Ti Superclocked+
Sound Card Creative
Monitor(s) Displays 3 x27" Dell & 2 x 23" Dell
Screen Resolution 3 @ 2560x1440 & 2 @ 1920x1080

Keyboard Microsoft Ergononic 7000
Mouse Logitech Performance MX
PSU 1500W ThermalTake Toughpower
Case Thermaltake Level 10 GT
Cooling Antec Kúhler H2O 620 CPU Watercooler
Hard Drives 240GB Intel 520 Series, 2.5" SSD, SATA III Intel X25-M SSD - 160GB
Internet Speed 34 Mb/s ADSL2+ (Bonded)
Antivirus Windows Defender, Malwarebytes Pro
Browser Firefox
Other Info WinTV NovaTD HP CP1515n Color Laser Sony BD-5300S-0B Blu-ray Writer Microsoft LifeCam Cinema APC 750i Smart UPS

Computer type Laptop
System Manufacturer/Model Number Sony VAIO VGN-FZ430E
OS Windows 8 Enterprise x64
CPU Intel(R) Core(TM)2 Duo CPU T5550 @ 1.83GHz
Motherboard Sony Corporation VAIO
Memory 3.00 GB
Graphics Card (1) Mobile Intel(R) 965 Express Chipset Family (2) Mobile
Sound Card High Definition Audio Device
Monitor(s) Displays 15.6 Inch Screen/HP VS17
Screen Resolution 1280 x 800 x 32 bits @ 59 Hz/1280x1024 @60MHz

Hard Drives FUJITSU MHY2250BH ATA Device
Internet Speed 20.0 MBPS
Antivirus Microsoft Security Essentials
Browser Chrome and Opera Primarily
Other Info Windows XP Pro x32, Windows 2000 SP4 also installed in a triple boot.

OS Win7 x 6 PC's