I might be thinking about a PC upgrade

[Onyxmeth]

I might be possibly be thinking about hopefully considering maybe a PC upgrade. I wouldn't need everything top of the line, just something that can get me playing The Witcher and some current FPS games. Crysis does not need to be the bar to reach. If it'll be too costly it's not that big a deal to me that I have to play Crysis. I really want to be able to handle Audiosurf at super high settings, and everything else at a comparable rate to PS3/360 games. Here's the PC I have right now. Tell me what I'm missing.

Product Details and Features

Product MPN
MPN	GT5411E
Key Features
Processor	Intel Pentium D 2.8 GHz
Chipset	Intel 945G
Installed Memory	1 GB (DDR2 SDRAM)
Operating System	Microsoft Windows Vista Home
Recommended Use	Home Use
Processor
Processor Type	Intel Pentium D
Processor Speed	2.8 GHz
Processor Manufacturer	Intel
Max Processors Qty.	1
Motherboard
Bus Speed	400 MHz
Video Output Interface	PCI Express
Memory
RAM Technology	DDR2 SDRAM
Installed RAM	1 GB
Max Supported RAM	2 GB
Number of Memory Slots	2 x DIMMs
Supported RAM Speeds	533 MHz
Installed Cache Memory	2 MB
Technical Features
Integrated Input/Output Ports	USB 2.0 x 6 • RJ45 Lan Port x 1 • PS/2 Mouse x 1 • PS/2 Keyboard x 1 • Parallel Port (ECP/EPP/SPP) x 1 • RJ11 Phone Jack x 1 (Input) • Serial (RS-232) x 1
Expansion Bays	1 x 5.25" External Slim Line (1/6H)
Expansion Slots	PCI Express x16 x 1 • PCI Express x1 x 1 • PCI x 2
Memory Card Slots	Memory Stick • SmartMedia • Memory Stick PRO • xD Picture Card • Micro Drive Memory Stick • MultiMediaCard • SD Memory Card • Memory Stick Duo • CompactFlash Card type I • CompactFlash Card type II • Memory Stick PRO Duo • Mini-SD Card • RS-MMC Card • MultiMediaCard Plus
Other Features	15-in-1 Memory Card Reader
Hard Drive
Hard Drive Capacity	250 GB
Hard Drive Interface	Serial ATA II
Hard Drive Rotation Speed	7,200 RPM
Controller Type	Serial ATA II
CD / DVD
Optical Drive Type	DVD±RW Dual Layer
Optical Drive Read Speed	16x (DVD) • 40x (CD)
Optical Drive Write Speed	40x (CD-R) • 16x (DVD+R) • 16x (DVD-R) • 4x (DVD+R Dual Layer)
Optical Drive ReWrite Speed	24x (CD-RW) • 8x (DVD+RW) • 6x (DVD-RW)
Audio / Video
Graphic Processor	Intel Graphics Media Accelerator 950
Video Out Ports	15 Pin D-Sub VGA port x 1
Audio Input	Microphone Jack • 1 x Line In
Audio Output Type	Headphones
Integrated Audio	Intel High Definition Audio Subsystem
Modem
Modem Type	Fax / Modem
Networking
Networking Type	Integrated 10/100 Network Card
Data Link Protocol	Ethernet • Fast Ethernet
Dimensions
Width	7.25 in.
Depth	16.5 in.
Height	15.5 in.
Weight	23.4 lb.
Miscellaneous
OS Certified	Microsoft Windows Vista
Product ID	40955970