Hi, Excellent Utility this, but I have a question. I regularly use an unattended disk to install XP on machines with only a CDROM but some have DVD drives. To this end I have two sets of disk. I have an Unattended DVD (1 disk) and an identical CD set (4 disks). Currently I use a batch file to check for the presence of a file on the disk, if the file is missing the program displays a .vbs file message asking for the correct disk. As the file system on the DVD mirrors the CD, if the DVD is inserted, the file is found and the install continues. If the CD is in, the file is not found and the message is displayed. Now if I use CDSwitch to try the same thing, it will work fine for the CD set as I can check for the presence of the correct label, however it wont work for the DVD as the DVD can't have four labels!! Is there any way to have CDSwitch check for the presence of a file on the required disk instead of just on the ejected disk?? An example would be: CDswitch %cdrom%\cd2.txt /f:%cdrom%\cd1.txt The example above would check for the file cd2.txt on the disk and if it didnt find it, would eject the CD with cd1.txt on the root of the disk. However if the DVD was inserted and had cd1.txt & cd2.txt on the root of the drive, then the install would carry on normally. Can this be done?????