Need help choosing parts for my pc (I don't know much about computers)

[Jimmy11221]

Hi, and thanks for clicking this. I currently have a laptop I bought 2 years ago for, but I'd like to upgrade to a desktop since I don't move it much anymore since I have an iPad and bring that around with me instead. It's been serving me well so far with what I've used it for, mostly school and games (league of legends and I plan on playing guild wars 2). I'm not familiar with computer parts so I'm not sure how to determine which video card, processor etc. I will need. I'd like to spend 600 but I can spend 800 if it's really needed. I also have a Sony vaio tower from about 8 years ago. Can I use any parts from it, like the tower, cd drives, and hard drive, it has no power supply since I gave it to my aunt since hers broke. I'd like to build it in 3-4 months so I can shop around or wait for sales. I also have a windows 7 os disc, keyboard, mice, and a 24 inch tv I use for a monitor. I live in mississauga, Ontario so I plan to shop. At tigerdirect.ca or newegg.ca. Thanks for reading and any help.

 

[l0v3rboi]

PCPartPicker part list / Price breakdown by merchant / Benchmarks

CPU: Intel Core i3-2100 3.1GHz Dual-Core Processor ($119.99 @ Newegg Canada)
Motherboard: ASRock H61M-DGS Micro ATX LGA1155 Motherboard ($69.99 @ Newegg Canada)
Memory: Mushkin Silverline 8GB (2 x 4GB) DDR3-1333 Memory ($37.99 @ Newegg Canada)
Storage: Western Digital Caviar Blue 500GB 3.5" 7200RPM Internal Hard Drive ($64.99 @ Computer Valley)
Video Card: HIS Radeon HD 6870 1GB Video Card ($179.99 @ Memory Express)
Case: Antec Three Hundred Two ATX Mid Tower Case ($62.29 @ DirectCanada)
Power Supply: XFX 550W ATX12V / EPS12V Power Supply ($54.99 @ NCIX)
Optical Drive: Asus DRW-24B1ST/BLK/B/AS DVD/CD Writer ($17.99 @ Canada Computers)
Total: $608.22
(Prices include shipping and discounts when available.)
(Generated by PCPartPicker 2012-08-23 13:33 EDT-0400)