Reporting a success:
I have a Mac Pro running Win xp X64 (64-bit) under standard bootcamp beta. I did have to download the video, sound and lan drivers separately but easily from manufacturer and other sites. Runs Solidworks x64 like a champ
The Internal Airport Extreme card IS NOW WORKING using a driver from dell. The connection is running 24 Mbps and the signal is weak, but I'm posting now from this wireless connection.
The process:
First verify you have the same Wireless chipset under Winxp x64 by going to device manager, double clicking the wireless network adapter under "other devices". Go to "Details" tab and select "device instance ID" under "property"
Mine reads
PCI\VEN_14E4&DEV_4328&SUBSYS_0087106B&REV_01\4&35A 448E&0&00E3
You are probably fine so long as you have the "PCI\VEN_14E4&DEV_4328" portion
Download R140747.EXE from dell, i found at
http://support.us.dell.com/support/d...&fileid=187881
Extract the file but dont run the auto( didn't try it but it may work) just prefered the direct method"
Go back to the device manager to the network card and on the "driver" tab hit "update driver". Say "no" to windows update and select "install from a list or specified location" go to "dont search, i will choose the driver" and point it at the directory where you extracted R140747.EXE which by default will be C:\dell\drivers\R140747\DRIVER
you card will show in device manager under network adapters as
Dell Wireless 1500 draft 802.11n WLAN Mini-card
Get a beer, surf and enjoy
Have not yet printed over the network succesfully but you may want Bonjour for windows to get started.