You can download the driver for the HP3852 from the Instrument Driver Network on the Developer Zone (http://zone.ni.com/devzone/devzoneweb.nsf). If you go to the main Developer Zone page and scroll down, you'll find a link to the driver network there. Once you're on the Instrument Driver main page click on Downloads. If you search on 'Hewlett-Packard' and 'HP3852' you'll find the instrument driver for this device. The insturment driver has all of the commonly used functions built into it, along with several examples for different configurations of the HP3852. Good luck!
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