Sorry about the lack of information. I'm following the instructions on the MSFN site to make an unattended XP SP2 installer, and the Windows installer (with all the current hotfixes) works fine. I've been testing it under the latest version of Virtual PC. The error occurs right after the hotfixes finish installing and it brings a dialog box saying "Windows cannot find x. make sure you typed the name correctly, and then try again. To search for a file, click the Start button, and then click Search.", where x is the application installer. The applications are named correctly and they are in the svcpack folder. The batch file works correctly when I run it outside of the windows installer. To svcpack.inf I added, after the hotfixes and qchain, I added my apps batch file. Yes, I have the svcpack folder source name in dosnet.inf. If there is anymore information that would be helpful for you guys helping me out then let me know. Thanks.