What graphic card can i put in my pc?

Pc info
Manufacturer: Dell
Model: Vostro VOSTRO_200
Processor: Intel Core 2 Duo CPU E7200 @ 2.53GHz (im just copying off the info chart cause i dont knwo much about pc)
Memory: 2.00 GB
System Type: 32-bit Operating System
Windows: Vista home basic

So i am a moderate gamer and i play fps games. but some games with good graphics wont work. i asked my friend and he said its cause of my pc's crappy graphics card. so i was wondering if i need to get a new graphics card and if i do which one.

im just gonna copy and paste this for people who wants more info. idk if it'll help.

System
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Manufacturer Dell Inc.
Model Vostro 200
Total amount of system memory 2.00 GB RAM
System type 32-bit operating system
Number of processor cores 2
64-bit capable Yes

Storage
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Total size of hard disk(s) 1164 GB
Disk partition (C  54 GB Free (223 GB Total)
Disk partition (D  4 GB Free (10 GB Total)
Media drive (E  CD/DVD
Disk partition (F  368 GB Free (932 GB Total)

Graphics
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Display adapter type Intel(R) G33/G31 Express Chipset Family
Total available graphics memory 287 MB
Dedicated graphics memory 0 MB
Dedicated system memory 128 MB
Shared system memory 159 MB
Display adapter driver version 7.14.10.1322
Primary monitor resolution 1280x960
DirectX version DirectX 9.0 or better

Network
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Network Adapter Intel(R) 82562V-2 10/100 Network Connection
Network Adapter Microsoft Tun Miniport Adapter