Graphics Card good for dolphin???

[Bren]

I Have a dell inspiron 530s

OS Name Microsoft Windows 7 Ultimate
Version 6.1.7601 Service Pack 1 Build 7601
Other OS Description Not Available
OS Manufacturer Microsoft Corporation
System Name BREN-PC
System Manufacturer Dell Inc.
System Model Inspiron 530s
System Type x64-based PC
Processor Intel® Pentium® Dual CPU E2200 @ 2.20GHz, 2200 Mhz, 2 Core(s), 2 Logical Processor(s)
BIOS Version/Date Dell Inc. 1.0.18, 2/24/2009
SMBIOS Version 2.5
Windows Directory C:\Windows
System Directory C:\Windows\system32
Boot Device \Device\HarddiskVolume1
Locale United States
Hardware Abstraction Layer Version = "6.1.7601.17514"
User Name Bren-PC\Bren
Time Zone Eastern Daylight Time
Installed Physical Memory (RAM) 3.00 GB
Total Physical Memory 2.99 GB
Available Physical Memory 328 MB
Total Virtual Memory 2.99 GB
Available Virtual Memory 482 MB
Page File Space 0 bytes

I'm trying to play Mario Kart Wii in full speed no lag no or graphics issues its slimline

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Oh and I'm going to change my budget to anything under $105