DBD::ODBC in a web application

If I create a test script to connect to a Microsoft Access database that
is on a network (UNC) drive I can connect to it fine.

If I try to do the same thing from a web application running under
Apache I get the following error:

Error executing run mode 'display_task_page': Can't connect to data
source driver=Microsoft Access Driver
(*.mdb);dbq=\\Resolver\Users\BHicks\Public\Project_task_repo rt_2003.mde,
no database driver specified and DBI_DSN env var not set at
C:/Perl/site/lib/CGI/Application/Plugin/DBH.pm line 42
at D:/Projects/www/DEV/exp/index.cgi line 14

I have tried mapping that UNC path to a local drive letter as well with
the same error.

I am not sure if the problem resides with Apache, the modules I am using
for the web application of DBD::ODBC itself.

Any pointers?

Robert