Some people are still reporting that they cannot build STLport 4.5.3 on MSVC. I’ve built STLport 4.5.3 many times under VC6 and VC7 on more than one machine, and it isn’t too tricky so I do wonder why people are having problems. Anyway, to save me trying to debug your compiler problems I’ve uploaded the prebuilt STLport .lib and .dll files, you’ll find them in the downloads section (source code snapshots area). Hope that sorts you out.