If anybody's ever looking for something like this:
vDos is nice little tool to run DOS programs. It's based on DOSbox.www.vdos.info
The new version doesn't need any external VC runtimes anymore, and seems to work nicely in PE.
You can download the installer and run it, or you can extract the files with InnoUnp. For PE you only need vDos.exe and 4dos.hlp. This new version has 4Dos built in!
Again, 99% of you probably don't need this, but it's nice to know it's around... Personally, I sometimes use DOS HTMStrip, and some ancient Clipper-made stuff (yes, Clipper runs fine, including Semware editor/ "Quick editor", Norton guides, etc.).