IIS logs not capturing whole URL

Hello all,

I have been having a problem with IIS5 logs not capturing enough URL
information and I'm wondering if anyone else has experienced this. URLs
are being truncated right after the file extension and, since the
identifying trailing information is not in the form of a query string,
the specific page information is being lost.

For example, I would like to find "/reference/blah.cfm/4" where the
final "/4" is the page identifier.
However, what is returned in the logs is just "/reference/blah.cfm".
And there also happens on another box serving asp. Logs capture a test
page called "test.asp" but not "test.asp/something".

I have no admin rights to these machines, and I did not create the web
pages that use this structure for the URLs. I was informed that it was
a search engine strategy from a while ago that was implemented across a
network of sites. I am assigned the task of processing the webtrends
reports. For kicks I reviewed a month of raw logs to confirm that the
trailing information is genuinely missing from all of the log's
cs-uri-stem and query fields.

Going forward, is there anything I can do to log the entire URL? Has
anyone encountered a situation like this or would have any suggestions
that might resolve/get around it? Looking for some fix not on the web
development side, like adding query strings to everything, since the
developers have made it clear to me they are not interested in this.
Thanks very much,
Col