Go to the LD beta download site at http://www.cisco.com/kobayashi/sw-center/internet/ld-beta.shtml register, and look for "CISCO-LOCAL-DIRECTOR-MIB.my"
Note that the Hosting Solutions Engine, and previous monitoring products, Content Flow Monitor and Localdirector User Interface, both used SNMP to get the real and virtual information. There were a few bugs in recent code releases that prohibited getting the virtual addresses and connections.
The older version of the MIB file is available from http://www.cisco.com/cgi-bin/tablebuild.pl/localdir
Also, check out the new 1105 at http://www.cisco.com/univercd/cc/td/doc/pcat/1105.htm It might be a good fit for your application.