Microsoft 6to4 adapter driver download windows vista

Frank,

Thanks for your reply.  I searched the microsoft site for hours this am and did not find a resolution from them which i find strange since it claims to be a microsoft adapter.  I also searched HP website for network drivers, but could not find them either.  Yes, I could go to the website for the network driver, and I may do that yet, but I am becoming more and more dissatisifed with HP's ability to provide exactly what I am looking for. 

Thank you for replying.  I really appreciate the help.  This is not my computer and I am just trying to get it to run a little better for the owner.  Since this adapter really does not affect the ability to get web access, I may just disregard it.  The age of the system, makes it possilby a candidate for replacement anyway.  (win/vista 32 bit......2gb ram limit.)