Dell OEM has worked with these tools for a long time; nLite, RVMI, RT7Lite, and it works with this tool as well (successfully created a USB install disk this way). The problem is user based in that I don't know how to make the iso with just the needed files. When I use the ISO Maker it takes the entire contents of my custom source folder and puts it in an ISO rather than just taking the 3GB wim file. As stated earlier, removing the other editions doesn't change the file size of the iso at all. So I guess the real question would be how do I actually remove the other editions from my source so that the iso made with the ISO Maker tool actually shrinks? The other big space hog is language related content. I've tried removing the language packs with the All In One tool but again, 0 difference in file size. I'm assuming that the reason for both of these problems is that the program is changing the size of the .wim but not actually removing files from my source location and then the ISO Maker tool is still grabbing the entire source (since you can't select a .wim file with it - already tried) and shoving everything into an ISO. I'm also assuming that this is not how it's supposed to work and that I'm just missing a setting somewhere to make the program actually remove that content. And yes, I've tried with a retail disk as well with the exact same results. I'm able to remove editions and language packs and all kinds of other stuff but the size of the created ISO doesn't change at all. Remember, XP didn't use .wims so when you removed something with nLite or RVMI it was gone. That file would no longer exist in the source you were using (why both of them made you copy the disk to the HDD before allowing you to do any editing).