Re-run Login Items after you have logged in?

Is there a way to re-run Login Items at a later time after someone has already logged in? Short story: I have mobile users who are managed with MCX. Most users have specific network volumes mounted at login as Login Items in WGM. Works great when the Mac users are on my LAN, but of course it doesn't work when those same users take their laptops off the LAN when they travel. Most of my mobile Mac users use a Cisco VPN solution to get back into my LAN as needed from the road. Id like to write a user-friendly script or app (i.e.; double-clickable icon) to re-run their MCX login items policies and mount their network volumes over the VPN. Long story: My Mac users get all their network volumes mounted at login time via MCX policies (which are AD groups nested in OD groups). Each Mac user automatically mounts certain network volumes at login time based on which AD groups they are in (managed in WGM). For example: Employees in our Imaging lab get the Imaging lab volumes, likewise employees in the Art Dept get the Art Dept volumes, etc. I'm basically mimicking the Windows paradigm of "mapping drives" - if you know what I mean. My problem is that many of my Mac users have laptops. Obviously these users dont have 24/7 access to the corporate network file servers when they are on the road unless they connect to the LAN via VPN. Which leads me on my mission of finding a solution for when they VPN into my LAN from the road: Id like a way to re-map those network volumes for them in a simple, fast manner. Is it possible to re-run Login Items such as the mounting of network volumes?