Tom Moore at Katabiblon.com has added a Latin version of the Hopperizer utility. The Hopperizer links texts to Perseus' Lexicon (for Latin, Lewis & Short or Elementary Lewis). The Greek version of this utility has been available for a while. It works great for pasting in your homework, linking texts which are not part of Perseus' database to a Latin lexicon. There are two versions, one which links to Perseus' lexicon directly, and a Diogenes linked version (for those who have installed the free Diogenes software) which runs on the local machine.
The Hopperizer can be found at http://www.katabiblon.com/tools/perseus-hopperizer/
If you find any bugs, make sure to report them on the Katabiblon website. Enjoy!