John,
There have been many complaints about Bootcamp and the Legacy LSU, so I tend not to recommend it. Perhaps it works for the DCS utility?
It's been while since I've run Boot Camp. At the time, it ran well with Loader 2.20 and Windows 95. However, I've actually never run Lionel's LSU under Windows on the Mac.
Regardless, the subject was running the Loader on a Mac and it most certainly ran fine under Boot Camp, as well as Parallels and VMWare's Fusion, for me.