Look at the manual section of the HP networking web site:
http://h10144.www1.hp.com/customercare/support/manuals/index.htmIn the MSM section, check out the "HP ProCurve MultiService Mobility Implementation Guide".
You need to have registered to access this, but if you do so, there is a chapter (3 to be precise), that describe a scenario that sounds pretty close to what you want to do.
Hope that helps at least to get started...