Problems with Lag with Windows Vista

[Seraph343]

Here are my Specs:

Acer Extensa 5630 Laptop
Windows Vista Home Premium 32 bit (Service Pack 1)
Intel Core 2 Duo Processor T5800 (2.0 Ghz, 800 MHz FSB, 2 MB L2 Cache)
(Up to 1244MB) Mobile Intel Graphics Media Accelerator 4800 MHD (4 Series)
3 GB DDR2 RAM
250 GB HDD

Internet:
Intel Wireless WiFi Link 5100
Broadcom NetExtreme Gigabit Ethernet

ISP:
DSL >768k Broadband service


Problem:
I get about 20 FPS and my Ping ranges from 30 to about 2000 :O
the FPS sometimes fluctuates and goes up to like 85 but most of the time its between 10 and 20.
The FPS and Ping problems seem to stick regardless of the server's ping that I'm on :O
I've tried OpenGL, D3D, and Software modes and they all seem to retain the lag issues.

Thanks for any help.