Hasn't anyone told Mozilla this? Or don't they want to know? [that's the closest to confused as I can find here] Big Fat Edit: it is now 20:37 I'm at the so-called Mozilla forum [registered] and I'm getting the run-around, I see no place to put a new post. You'd thunk that the smart people over there would know about BWC and take him under their wing as a supporting contributor. Mozilla developers say ”We finished support Windows 2000, so new use new API and delete stub function for Windows 2000” And, I changed from KDW wrapper project to Extended kernel . v15 kernel can use Firefox 13 and ThunderBird 13