My flashbuilder 4.6 project was moved to my windows xp machine and I had to reinstall the XOOM device drivers again. This time I ran into more issues but I am going to document what I did, so when I deploy more apps to the device I can follow these directions.
The same site XOOM drivers in my previous post for windows 7, still holds for downloading the drivers. The download file MotoHelper_2.1.40_Driver_5.5.0.exe contains the msi file, Motorola_End_User_Driver_Installation_5.5.0_32bit.msi, which is used to install the XOOM drivers. This motorola website Installing Motorola Handset USB Drivers also allowed you to download the usb drivers in msi format but I think the previous website was all encompassing.