Thanks for your answer, But I did what basementman suggested: I'm using SetTitle() and it's working fine. Here's where I put the function, in my CLaserPlusBeta1Doc.cpp: BOOL CLaserPlusBeta1Doc::OnNewDocument() { if (!CDocument::OnNewDocument()) return FALSE; // TODO: add reinitialization code here // (SDI documents will reuse this document) CDocument::SetTitle("MyTitle"); return TRUE; } I don't need to specify a path name, so it's easier this way. Dave