Thanks Nish, it was indeed a stupid programming mistake which Win98 doesn't care about but win 2000 does..

Override CFormView::OnCreate I vote pro drink :beer:

Thanks a lot for your answer, Steen! This really helps me a lot! You guessed right, I want to create a nested splitter. It should look like this: ------------------------------ |*CForm* |***************| |*View** |***************| |***1***|***************| |---------|*****CView***** | |*CForm* |***************| |*View** |***************| |***2***|***************| ------------------------------- As i have been thinking about putting tabs in "CFormView 2" pane Zoran Todorovic's Visual Framework probably is the perfect solution for me. Thanks for the hint! Anyway, if someone knows an easier (shorter) way of creating nested splitter please let me know! Semlo