HP compaq 6720s windows xp Lan driver needed

I bought a HP 6720s and now i am not able to get the XP drivers....... can anybody tell me where can i find them or if not then can anybody tell me that in how many days can i return the product back to HP????
I also doiing this:
Guys i FOUND it. It's the standard intel driver(82562GT)we all tried so far. The O/S doesn't handle the resources it allocates to it correctly and that cannot be changed.So I did a new windows XP installation and removed the ACPI at startup. After that windows handles the NIC correctly. Here is the link http://support.microsoft.com/kb/216251/. You need to choose standard pc.
After that I installed the network card first and it WORKS.
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after doing above steps LAN is working, but vga card not works.
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I did a new windows XP installation and removed the ACPI at startup.
During the first phase of Setup, at the Setup is inspecting your computer's hardware configuration screen, press the F5 key.
2. Select the appropriate HAL, or Select Other to specify a third-party HAL. The available HALs include:
and i select
Standard PC instead of ACPI Multiprocessor PC
after doing this NIC card is working fine but grpahic card is not working , pleae suggest any tip regarding this.

buy an new network card and drop it into an PCI slot ? thay only cost like £/$10

Just how hard did you look for the XP drivers?

I found a lot of them HERE.

Load the chipset drivers first.

A BIOS does not become obsolete. Sometimes there may be a problem with one and an update is quickly issued to correct a specific problem, but they don't just become obsolete. Yours may be perfectly fine.