Take a look at this document:
http://community.landesk.com/support/docs/DOC-7945 It will explain the LANDesk HII way of dealing with MassStorage Drivers.
If you allow me a small plug, we as Axle-IT also have an alternative HII tool for both XP, Win7 and Win7x64 that handles Mass Storage Drivers (without extra configuration), HAL differences (XP), unsigned Win7 drivers, generic drivers and setup (setup.exe) based drivers. It gives the ability to 'sign off' on a model (drivers per model) and supports UNC drives and preferred servers. Fast and very easy to use and control. This toolset is free for our customers (which are happy excellent references) but we also offer it for a very small fee to other LANDesk users. Contact me for more information if you are interested.