[Exim] Routing Mail to a Script

I have a moblog script for my blosxom webpage.

It requires that whenever mail is sent to a certain address, exim has to run the moblog
script on the incoming mail.

To do it in procmail, it would look like this...

     :0
#     * ^From:.*4344212121@???
#     * ^TO_user\+moblog@???
#     {
#         :0 c
#         | bin/moblog-filter.pl
#
#         :0
#         mail/moblog
#     }

I just dont know how to do this in exim...or if it is even possible.

thanks
Tim