Drivers for inspiron 1440 with windows XP SP3 on it!

Because Dell did not offer that notebook with WinXP, you will not find Dell specific drivers for it.
You will have to go to the manufacture's site (of the device itself) to get the drivers.

That notebook was available with a few different wireless cards.  What it has depends on what was ordered with it.
You can go to the device manager to see what vendor and model you have and then proceed from there for the driver.

The other thing you can do is use the ethernet connection and let Windows update install drivers for it.  It should recognize the wireless card and install the drivers for you.

That did not help Bay Wolf. Anyways thanks for your time fir helping me. Please keep posting if you find something.

I found a web site that may be of help to you.

The chipset drivers are a definate.

www.getpcmemory.com/.../download-dell-inspiron-1440-notebook-windows-xp-drivers

Hey Bay Wolf  thanks so much for your help. I have already gone through the link you provided but did not fetch me any help. But found the wireless drivers from from following link meanwhile..

en.community.dell.com/.../19560495.aspx    

But the problem I am having right now is I am unable to turn on my wireless since it is associated to my keyboard function keys. I guess I have to install the drivers for he keyboard to activate them. Any suggestions from your side bat wolf?

I just came across this thread.  It addresses some of the issues you may have with getting drivers for your system.

en.community.dell.com/.../19288736.aspx

When installing a fresh copy of the operating system, there are a few drivers that need to be installed and there is a correct order to install them.
Learn how to install Install Drivers in the Correct Order by Clicking Here.

If you do not install the chipset driver and a few other items, you will not have full functionality of your system.

I don't know if you can get the function of the keyboard to turn your wireless on/off without the Quickset software.

Here is what the QuickSet software provides.

Dell´s QuickSet in a useful application that allow users to access power management diagnostics and settings. QuickSet provides the following features: power management scheme and battery resource information and health. This utility also detects unsupported power-adapter/dock/battery scenarios and displays warning messages. Moreover, the application shows brightness and desktop font and Internet Explorer Scaling. As regards connectivity, the program controls radio/wireless activity using the wireless switch (OR) the Fn+F2 hotkey depending on your system, creates and switches profiles comprising location dependent on system settings and also manages multiple connections.

Thank you so much for educating me..will look into it.

Yup.  That's the same link I posted earlier.  It didn't have the QuickSet software the OP needs.

Ah sorry. so it is. Quickset from an older system may work such as the Inspiron 6400 but I'm not sure.

Seems to be something ehre on XP:

www.getpcmemory.com/.../download-dell-inspiron-1440-notebook-windows-xp-drivers