Just submit a trouble ticket to MS, tell them that the driver signing for Windows XP is broken. I have made sure that "Prompt for unsigned drivers" is ticked. Now the way XP is built any application that tries to install unsigned drivers you are supposed to be prompted to allow the installation, SF does no such thing, it installs it's own drivers without prompting for installation, this can be considered a security flaw by MS. I have started a trouble ticket with them and they are researching the problem, they too would like to know why you are not prompted to install unsigned and potentially unsafe drivers, they are working on it. Now if everyone would follow suite and inform MS of this security flaw then maybe they would be quicker to look at it.

This link will show you how to search for unsigned drivers:
http://www.microsoft.com/windowsxp/u...s/kelly93.mspx