Dell's TrueMobile 1150 Mini-PCI wireless card, aka Agere MPC13A-20/R, aka Toshiba PA3171U-1MPC, Toshiba ZA2314P04, is one of a handful of wireless cards whose drivers are native to Windows XP - i.e., drivers are built-in for Windows XP and no external installation is necessary. The problem is that the native Windows XP drivers will only handle up to WEP security settings, and can't handle WPA at all.
Fortunately, DELL has provided us with a driver for this card that will handle WPA. This driver can be downloaded at DELL support site. Since eBay Guides won't allow me to post a link outside of eBay, just Google " DELL driverID R69905 " and select the link to DELL to download this driver and you'll have it in just a few seconds (it's a small one).
This DELL WPA driver can be used on the MPC13A-20/R card - whether this card is labeled DELL, Gateway, IBM, or Toshiba - on any computers.
Now ... installation of this WPA driver will require a bit of special handling. Why, you ask? Because Windows XP will have already installed its native drivers for this card, and it (Windows XP) thinks that the most suitable drivers are already installed. So you and I will have to over-ride that with the WPA driver from DELL. So follow these steps below, and let's over-ride Windows XP's native drivers with DELL's WPA driver:
(1) Double-click the DELL R69905 driver that you've just downloaded - click "Continue" followed by "OK" to have the files unzipped. The DELL WPA Drivers will be unzipped to a folder named "C:\DELL\Drivers\R69905" on your hard drive; Ignore the installation notes provided by DELL and close it.
(2) Now Click the "Start" menu, and select "Control Panel", at Control Panel, double-click "System", the choose "Hardware", followed by "Device Manager", and at Device Manger, double-click "Network Adapters", then move to the item in Network Adapters that sez Wireless (LAN, WLAN) Adapter, Right Click on it, and choose "Update Driver".
At the "Welcome to the Hardware Update Wizard" screen, choose "No, not this time", and click "Next";
At the next "Hardware Update Wizard" screen, choose "Install from a list or specific location (Advanced)", and click "Next";
At the next "Hardwaere Update Wizard" screen, choose "Don't search, I will choose the driver to install", and click "Next";
At the next "Hardware Update Wizard" screen, choose "Have Disk";
At the "Install from Disk" pop-up, use "browse" and navigate to the "C:\DELL\Drivers\R6605" folder.
By now, Windows would've located the WLDEL48B.INF, choose "Open";
At the next "Install from Disk" screen, choose "OK";
At the next "Select Network Adapter" screen, choose "DELL TrueMobile 1150 series Mini PCI Card", then click "Next";
At the "Driver Update Warning" screen that ensues, click "YES" to proceed with the over-ride;
At the "Complete the Hardware Update Wizard" screen, click "Finish".
That's it. We have just completed the over-ride and your Windows Device Manager should now show this card as: "DELL TrueMobile 1150 series Mini PCI Card". Reboot your computer, and the newly installed WPA drivers are now deployed and ready for use. I didn't count the number of mouse clicks it took for us to do this, but it can't be more than 20 or 30 clicks, and the total time it took was probably 100 seconds in all. That was easy, wasn't it?
A very special thanks to DELL for the superb driver support. When it comes to driver support, DELL is far and away the best of them all :-)