Help meh Please

Hi, I need help with graphic card that could support this computer. my bugget is around $100. thank you. and the games that i'm looking forward to play is Aion, Champion online.

Product Features

* Intel® Core™2 Quad processor Q8200
Features 4 processing cores, 1333MHz frontside bus, 4MB L2 cache and 2.33GHz processor speed per core.
* Four powerful processing cores
Let you get into gaming, communicating and running multiple applications simultaneously.
* 4GB DDR3 memory
For multitasking power.
* Multiformat DVD±RW/CD-RW drive
With double-layer support records up to 8.5GB of data or 4 hours of video using compatible DVD+R DL media; supports DVD-RAM; also supports Labelflash direct-disc labels using compatible Labelflash media.
* 640GB SATA hard drive (7200 rpm)
Offers spacious storage options and fast read/write times.
* Intel® Graphics Media Accelerator X4500
Delivers intense images with stunning detail.
* Multi-in-one digital media card reader
Supports Compact Flash Type I/II, Compact Flash +, Microdrive, MultiMediaCard, Reduced-Size MultiMediaCard, Secure Digital, xD-Picture Card, Memory Stick and Memory Stick PRO formats.
* IEEE 1394 (FireWire) interface and 9 high-speed USB 2.0 ports (5 front)
For fast digital data transfer and easy peripheral connectivity
* Built-in 10/100/1000 Gigabit Ethernet LAN
With RJ-45 connector and 56 Kbps modem for quick and easy wired Web connection.
* Amplified stereo speakers
With 6-channel high-definition audio create a lush soundscape.
* Built-in device holder
Provides a convenient place for your camera, MP3 player or camcorder.
* Photo frame button
Lets you turn your monitor (not included) into a slideshow of your favorite photos.
* Microsoft Windows Vista Home Premium 64-bit Edition operating system
With Service Pack 1 (SP1) preinstalled provides a stable platform for word processing, Web navigation, gaming, media storage and more.
* Software package included
With Adobe Reader, Microsoft Money Essentials and more. 60-day trial version of Microsoft Office Home 2007 also included.
* Intel, Pentium, Celeron, Centrino, Core, Viiv, Intel Inside and the Intel Inside logo are trademarks or registered trademarks of Intel Corporation or its subsidiaries in the United States and other countries.

the monitor is like 20" widescreen can you recommend the resolution and about the power supply for the computer do i need to change it also? the computer is build by gateway.
thanks

100$ = 4850

You will need a new power supply as I barely trust the power supply you have for powering your system.

Here's a good one for $50

http://www.newegg.com/Product/Prod [...] 6817341022

As for 4850 look for one with a good warranty like these 2 cards

http://www.newegg.com/Product/Prod [...] 6814150337

http://www.newegg.com/Product/Prod [...] 6814150351

OR

if you want a slightly cheaper one.

http://www.newegg.com/Product/Prod [...] 6814102824

http://www.newegg.com/Product/Prod [...] 6814121253

http://www.newegg.com/Product/Prod [...] 6814131162

I personally prefer XFX over the other brands because of the warranty.

OCZ and PC Power & Cooling have merged and though they are still separate brands. Recently OCZ power supplies have been getting better and more reliable. Whether this one is one of their good models is unknown, but for $40 it's better than most at the price point.