Installing&Configuring Microsoft IIS 3.0

I can’t configure MS IIS 3.0 for processing ASP-scripts. Installation sequence:
– installing Windows NT server 4.0
(with MS IIS 2.0)
– installing Service Pack 6.0a
(Service manager Help Box report about version 3.0)
ASP-scripts not processed, static HTML- and dinamic IDC/HTX-scripts processed correctly.
What need to correct this problem?