Windows 7 Windows 7 World of Warcraft issues.

I recently upgraded to Windows 7 and my fps is terrible, to the point of not being able to play, in or out of major cities. Currently i am running the lowest resolution and settings and it seems to not really change anything (except minimally; 2-3 fps faster than my previous settings that ive raided at for 2+ years). Are there any fixes for this? Below is my dxdiag, any help is appreciated. Email/post questions or more info needed.

Operating System: Windows 7 Home Premium 32-bit (6.1, Build 7600) (7600.win7_gdr.100618-1621)
Language: English (Regional Setting: English)
System Manufacturer: Dell Inc.
System Model: Inspiron 531s
BIOS: oC)Phoenix - AwardBIOSTeDell System v6.00PG
Processor: AMD Athlon(tm) 64 X2 Dual Core Processor 4400+ (2 CPUs), ~2.3GHz
Memory: 3072MB RAM
Available OS Memory: 3006MB RAM
Page File: 2520MB used, 3492MB available
Windows Dir: C:\Windows
DirectX Version: DirectX 11
DX Setup Parameters: Not found
User DPI Setting: Using System DPI
System DPI Setting: 96 DPI (100 percent)
DWM DPI Scaling: Disabled
DxDiag Version: 6.01.7600.16385 32bit Unicode

Card name: NVIDIA GeForce 6150SE nForce 430
Manufacturer: NVIDIA
Chip type: GeForce 6150SE nForce 430
DAC type: Integrated RAMDAC
Device Key: Enum\PCI\VEN_10DE&DEV_03D0&SUBSYS_020E1028&REV_A2
Display Memory: 1065 MB

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