Looks like the installer doesn't see your optical drive.
Another possible option is to try the LiveCD version and see if it will install.
The next step to try would be a multi-step hard drive install. The process goes something like this: Boot a utility CD and re-partition the drive. Make and format a FAT partiton just big enough to hold the ISO file. Copy the file to the root of this partiton (C:\VL6.0-Light-Final.iso). Boot off the install CD and see if it finds the ISO file. If that works, you can install without a swap partition, and convert the FAT partiton to swap later. Post if you want to go this route, and we'll give more detailed instructions.