What a small world, I found this thread looking for CW 8 for Windows because of Netware support and found another BeOS fan.
I think I've found a way to get CW 8. I looks like it's bundled with this book.
Big C++ with WeL Total Java CD Metrowerks Codewarrior 8 and Sleve for Horstmann Big C++ Set (Paperback)
I just Googled the ISBN & found better deals.
Hope this helps.
D. Blake