New Dell Latitude XT not seen by Deployment Console

We are a school district trying to image new Dell D630 laptops and some Dell Latitude XT tablets. When we plug a D630 to the network it shows up in the Deployment Console so we can image it.

The Dell Latitide XTs will not show up in Deployment Console.

Both the D630s and the XTs have XP as the OS and they have the exact same NIC (Broadcom NetXtreme 57xx Gigabit Controller).

PXE is Linux Managed. The Latitide XT is getting an IP#. It stalls for a very long time on the 'Uncompressing Linux....OK, booting the kernel' line. It eventually says 'Please wait while Altiris Linux x86 PXE boots.'

Then it gives lots of error messages. The first line is ' Error connecting IPv4 socket. and Mount error 101 - network unreachable. Further down the screen it says 'Warning: no express mount found'.

How do we get Deployment Console to see the XTs.
We are new to Altiris. I have checked forms and KBs but cannot find an answer. Using DS 6.9 - 176

Nancy