Contributed By: Cliff Hobbs [MVP SMS]
Reproduced from the Microsoft Software Update Services: Frequently Asked Questions web page:

"No. SUS 1.0 does not support the delivery of drivers, even though the Automatic Updates component does attempt to detect drivers. The "Windows Update.log" file on computers running Windows XP or Windows Server 2003 will contain the following entry when checking for updates available on your SUS server:

Error IUENGINE Querying software update catalog from
http://mysusserver/autoupdatedrivers/getmanifest.asp (Error 0x80190194)

This entry is expected on computers running Windows XP or Windows Server 2003 and does not interfere with the ability of SUS and Automatic Updates to deliver and install critical Windows updates."