Questions about the impetus and philosphy behind WUD: Was WUD conceived of as simple way to create local "libraries" of updates, or was there some other concept involved? Were the ULs always meant to be "provided" (albeit with the help of others)? How are the ULs on the http://wud.jcarle.com/ site created. Are there tools used, or is it painful hand coding? Possibly out of scope, but how does one figure out how to "slipstream" a given update? Thoughts on UL generation: Are you familiar with the "Windows Update Agent" (WUA) and wsusscn2.cab? These could be used to automatically generate ULs based on criteria. In fact, though I do not grok the schema (yet), the wsussc2.cab contains (I think) all the information needed to create ULs using XSLT to transform the data into UL schema form. From either of these techniques you could create and adjunct program or a featuure to do auto list generation with an interface similar to this: http://www.microsoft.com/technet/security/current.aspx Also, as I understand it so far, the WUA API has the ability to scan the systems (like hfnetchk) for updates, AND install them. Now this may beyond the scope of this project, it is worth thinking about. Here are some links: WUA API Reference - http://msdn2.microsoft.com/en-us/library/aa387099.aspx WUA API Downloads - http://www.microsoft.com/windowsserversyst...ds/default.mspx WUA API Samples - http://download.microsoft.com/download/8/d...s+and+Tools.EXE WUA API Samples Doc - http://download.microsoft.com/download/a/6...86d8/readme.htm Some suggestions: Schema Change: Add an optional attribute for "integrationmethod" that would be a referance to a integration element, to be determined. In fact it could be a ref to another schema. This would allow people like myself to figure out how to slipstream the update and document (or even provide code or script) for it, such that after downloading they could be integrated. Schema Change: Add an optional element for the commented "downloadpage" seen in the lists: <!-- http://www.microsoft.com/downloads/details.aspx?familyid=7C48DC3A-E3A2-4681-A0D1-3886AFDC6E73&displaylang=en --> Thanks for a very elegant tool!