Cannot server .cfm pages

[javon7065]

hello. I am having an issue with Cold fusion server 4.5.1 sp2 and IIS 4

I am getting the generic 500 Internal Server Error when attempting to load a .cfm page.

here is what happened

on a new server I:

1) installed IIS, then SP6a
2) installed CF 4.5.1 sp2
3) everything worked fine
4) had to back off IIS (did it by following M$ article)
5) reinstalled IIS and then Cf problem appeared
6) reinstalled CF 4.5.1 sp2 and problem still exists

I have looked on CF website and followed all of the tech articles on it

any ideas??

thanks

joe