Specs say that this program supports ISO's and MDF files but when I try to mount them I get an ERROR message "This disc may be corrupt, make sure this disc is a format that windows recognizes. If the disc is unformatted, you need to format before using it." The disc is not corrupt, it is a standard ISO file but when I look at the window after I click the mount box, in the Open File window where it says File Type it has 3 choices of files "CD or DVD Images", "Other Images" or "All Files". Unfortunatly none of these see ISO's or MDF Images. I see on "Alcohol 120%"s Virtual Drives it says all the image files it reads where file choices are listed. They are "All image files" ( btw, b5t, b6t,ccd, isz, cue, cdi, pdi, mds, mdx, nrg, iso ) and "All files". So slysoft's is not working as they have advertized it too or is there a problem with the Virtual Clonedrive Program? I would hate to buy Alcohol's 120% Program just for the Virtual drives. Can anyone help me out? Thank you. I am running Win. 7 home pro.