Here's the iis_redirect.log if that's any help:
Fri Apr 18 12:08:24 2003] [jk_isapi_plugin.c (705)]: In HttpFilterProc Virtual Host redirection of /www.qnet.qub.ac.uk/Solarnet/Stats/stantsChoice.jsp
[Fri Apr 18 12:08:24 2003] [jk_uri_worker_map.c (447)]: Into jk_uri_worker_map_t::map_uri_to_worker
[Fri Apr 18 12:08:24 2003] [jk_uri_worker_map.c (464)]: Attempting to map URI '/www.qnet.qub.ac.uk/Solarnet/Stats/stantsChoice.jsp'
[Fri Apr 18 12:08:24 2003] [jk_uri_worker_map.c (529)]: jk_uri_worker_map_t::map_uri_to_worker, Found a suffix match ajp13 -> *.jsp
[Fri Apr 18 12:08:24 2003] [jk_isapi_plugin.c (721)]: HttpFilterProc [/Solarnet/Stats/stantsChoice.jsp] is a
servlet url - should redirect to ajp13
[Fri Apr 18 12:08:24 2003] [jk_isapi_plugin.c (784)]: HttpFilterProc check if [/Solarnet/Stats/stantsChoice.jsp] is points to the web-inf directory
[Fri Apr 18 12:08:24 2003] [jk_isapi_plugin.c (657)]: HttpFilterProc started
[Fri Apr 18 12:08:24 2003] [jk_isapi_plugin.c (705)]: In HttpFilterProc Virtual Host redirection of /www.qnet.qub.ac.uk/jakarta/isapi_redirector.dll
[Fri Apr 18 12:08:24 2003] [jk_uri_worker_map.c (447)]: Into jk_uri_worker_map_t::map_uri_to_worker
[Fri Apr 18 12:08:24 2003] [jk_uri_worker_map.c (464)]: Attempting to map URI '/www.qnet.qub.ac.uk/jakarta/isapi_redirector.dll'
[Fri Apr 18 12:08:24 2003] [jk_uri_worker_map.c (570)]: jk_uri_worker_map_t::map_uri_to_worker, done without a match
[Fri Apr 18 12:08:24 2003] [jk_isapi_plugin.c (711)]: In HttpFilterProc
test Default redirection of /jakarta/isapi_redirector.dll
[Fri Apr 18 12:08:24 2003] [jk_uri_worker_map.c (447)]: Into jk_uri_worker_map_t::map_uri_to_worker
[Fri Apr 18 12:08:24 2003] [jk_uri_worker_map.c (464)]: Attempting to map URI '/jakarta/isapi_redirector.dll'
[Fri Apr 18 12:08:24 2003] [jk_uri_worker_map.c (570)]: jk_uri_worker_map_t::map_uri_to_worker, done without a match
[Fri Apr 18 12:08:24 2003] [jk_isapi_plugin.c (775)]: HttpFilterProc [/jakarta/isapi_redirector.dll] is not a servlet url
[Fri Apr 18 12:08:24 2003] [jk_isapi_plugin.c (784)]: HttpFilterProc check if [/jakarta/isapi_redirector.dll] is points to the web-inf directory
[Fri Apr 18 12:08:24 2003] [jk_isapi_plugin.c (824)]: HttpExtensionProc started
[Fri Apr 18 12:08:24 2003] [jk_worker.c (132)]: Into wc_get_worker_for_name ajp13
[Fri Apr 18 12:08:24 2003] [jk_worker.c (136)]: wc_get_worker_for_name, done found a worker
[Fri Apr 18 12:08:24 2003] [jk_isapi_plugin.c (860)]: HttpExtensionProc got a worker for name ajp13
[Fri Apr 18 12:08:24 2003] [jk_ajp_common.c (1352)]: Into jk_worker_t::get_endpoint
[Fri Apr 18 12:08:24 2003] [jk_ajp_common.c (1075)]: Into jk_endpoint_t::service
[Fri Apr 18 12:08:24 2003] [jk_ajp_common.c (280)]: Into ajp_marshal_into_msgb
[Fri Apr 18 12:08:24 2003] [jk_ajp_common.c (413)]: ajp_marshal_into_msgb - Done
[Fri Apr 18 12:08:24 2003] [jk_ajp_common.c (612)]: sending to ajp13 #256
[Fri Apr 18 12:08:24 2003] [jk_ajp_common.c (853)]: ajp_send_request 2: request body to send 0 - request body to resend 0
[Fri Apr 18 12:08:24 2003] [jk_ajp_common.c (698)]: received from ajp13 #31
[Fri Apr 18 12:08:24 2003] [jk_ajp_common.c (461)]: ajp_unmarshal_response: status = 404
[Fri Apr 18 12:08:24 2003] [jk_ajp_common.c (466)]: ajp_unmarshal_response: Number of headers is = 1
[Fri Apr 18 12:08:24 2003] [jk_ajp_common.c (506)]: ajp_unmarshal_response: Header[0] [Content-Type] = [text/html]
[Fri Apr 18 12:08:24 2003] [jk_isapi_plugin.c (428)]: Into jk_ws_service_t::start_response
[Fri Apr 18 12:08:24 2003] [jk_ajp_common.c (698)]: received from ajp13 #664
[Fri Apr 18 12:08:24 2003] [jk_isapi_plugin.c (562)]: Into jk_ws_service_t::write
[Fri Apr 18 12:08:24 2003] [jk_ajp_common.c (698)]: received from ajp13 #2
[Fri Apr 18 12:08:24 2003] [jk_isapi_plugin.c (872)]: HttpExtensionProc service() returned OK
[Fri Apr 18 12:08:24 2003] [jk_ajp_common.c (1307)]: Into jk_endpoint_t:
one
[Fri Apr 18 12:08:25 2003] [jk_isapi_plugin.c (657)]: HttpFilterProc started
[Fri Apr 18 12:08:25 2003] [jk_isapi_plugin.c (705)]: In HttpFilterProc Virtual Host redirection of /www.qnet.qub.ac.uk/Solarnet/Introduction.php
[Fri Apr 18 12:08:25 2003] [jk_uri_worker_map.c (447)]: Into jk_uri_worker_map_t::map_uri_to_worker