Cisco LEAP in Vista - Thinkpad T60 laptop

I spend some time at a client who uses LEAP in their facility. When trying
to configure wireless in Vista business, it doesn't appear to be an option.
I read a few things on the web stating the same thing, but don't know if
they're knowledgeable or uninformed.

Can Vista utilize LEAP protocol or do I have to set up a dual-boot XP/Vista,
using the XP for clients requiring the Vista-incapable applications (Cisco
VPN with stateful firewall, LEAP wireless, etc).