ASP Version Number

1st, sorry if this same question got posted twice, my browser wigged out on me.

How can I determine what version of ASP I'm running? I've written and tested some scripts on my NT4 station using the PWS application included with the NT4 Option Pack. These scripts will eventually be running on a server with IIS4 - will I have any compatibility issues? I thought I read somewhere that PWS was, in fact, IIS4 so maybe I'm OK.

I also found a book detailing ASP 3.0, but I can't tell what the heck that means, since I can't find a version number anywhere...

Thanks!