CertSrv "Page Not Found" (again)

Ahoy!

So I've scoured just about every website I could find on this subject,
but can't seem to determine what the solution to this problem is.
Lemme quickly go over my situation.

I have IIS installed. In the IIS manager, I can see "CertSrv" under
the "Default Web Site". In the CertSrv section, I see a default.asp
listed. Even if I right-click that file and go to "Browse" on the
local machine, it doesn't come up. Instead I get a message in IE
saying "Page Not Found."

I figured that maybe ASP extensions weren't installed. In Web Service
Extensions, I have both 'ASP.NET v1.1.4322" and "ASP.NET v2.0.50727
(32-bit)" Allowed. Furthermore, the component definitely seems to be
installed in Add/Remove programs.

Here's what appears in the log:

2008-02-07 15:35:11 W3SVC1 127.0.0.1 GET /CertSrv/default.asp - 80 -
127.0.0.1 Mozilla/4.0+(compatible;+MSIE+7.0;+Windows+NT
+5.2;+WOW64;+.NET+CLR+2.0.50727;+.NET+CLR+1.1.4322 ) 401 2 2148074254
2008-02-07 15:35:11 W3SVC1 127.0.0.1 GET /CertSrv/default.asp - 80 -
127.0.0.1 Mozilla/4.0+(compatible;+MSIE+7.0;+Windows+NT
+5.2;+WOW64;+.NET+CLR+2.0.50727;+.NET+CLR+1.1.4322 ) 401 1 0
2008-02-07 15:35:11 W3SVC1 127.0.0.1 GET /CertSrv/default.asp - 80 RRE-
K2-JJJD\AutoAdmin 127.0.0.1 Mozilla/4.0+(compatible;+MSIE+7.0;+Windows
+NT+5.2;+WOW64;+.NET+CLR+2.0.50727;+.NET+CLR+1.1.4 322) 404 0 3

Any help would be GREATLY appreciated. Thanks in advance.