Hello, i am using on my work on older version of autocad, namely lt 2004 and i am deploying this with mdt 2010 whit the follwing command: msiexec /i "\\servername\mdt$\autocad lt 2004\BIN\ACLTFEUI\ACLT.MSI" INSTALL=ALL ACADSERIALPREFIX=340 ACADSERIALNUMBER=90409380 ACADFIRSTNAME=SC ACADLASTNAME=SC ACADORGANIZATION=HSC /q and it works fine, but when starting autocad lt 2004 after installation the:product authorization appears and i want to do this automatic true the command above. can someone tell me how to do this please? thanx