Correction to the reply, it is only available on IIS version 5.0, on Windows 2000 platform. I believe win95/98/nt4 pws only support ASP 2.0 or even just 1.0. To take advantage of ASP 3, you need win2k.
Thanks for the reply. I thought that might be the case. Although the Teach Yourself ASP 3.0 in 21 days does state that you should use WinNT or Win2K but it doesn't seem ( please correct me if I'm wrong ) to state that you must use one of these with IIS5 for parts of ASP 3.0 to work.