Not sure what you mean by burning .dsk files, but Nero will work for a wide variety of formats.
Also, not sure where your URL link was suppose to point.
Ahhh, my apologies, I was trying to link to KB68418. It refers to making a .dsk file with EEM and then burning that to a CD, and specifically refers to Nero in the KB article.
There are many freeware software that can do this. I use MagicISO for this purpose.
For safetech if you have nero you can create bootable cd.
http://www.bay-wolf.com/bootcd.htm or read the manual from http://www.nero.com/enu/support-nero6-tutorials.html
and many other tools.. but this a bit limited to use only one image.
For multiple boot(safetech + wintehc etc..)
you can use http://www.nu2.nu/bootcd/
but i prefer isolinux http://syslinux.zytor.com/wiki/index.php/ISOLINUX
to integrated safetech & wintech and other usefull tools for my Site IT.
for convinient i also put script with syslinux http://syslinux.zytor.com/wiki/index.php/SYSLINUX in the iso/cd
so my site it can port the tools for bootable usb thumdrive.
well it's depends.. there are many way to do it..