How To Log ASP-error Codes?

I would like to write ASP error codes in a log file. Error message would be
for example:

ADODB.Fields error '800a0cc1'
Item cannot be found in the collection corresponding to the requested name
or ordinal.
/ASP-application/page1.asp, line 67

I've learned that it is possible to get some information with the
'err-object' of VB. Unfortunately these codes and descriptions are not that
good as the ones ASP itself generates. First of all I'm interested in the
description ("Item cannot be found in..") and the line in the ASP-Page where
the error occurs.

Does anybody know how to catch this information?