Hmm, interesting.Can you explain? Does the variable need to be set using some tool, is it accessible only thru the xml, or thru batch-files or normal win32 setup environment.... no, it seems to me that WAIK understands it...when I click "Check answer file" - there're no errors...so, i don't know how but it works. I've already installed that way Office 2007 (unattended) and nod32... I wrote 2 lines in autounattend.xml: %CDRoot%\soft\Office2007.exe and "%CDRoot%\soft\nod32v.2.7.exe" /VERYSILENT /SP- (when using command line parameters I use "" )