Upgrading to R:BASE for Windows 6.5++

[McClure, Cheryl]

I'm ready to upgrade our group of about 20 users to R:BASE for Windows
6.5++.  R:BASE for Windows v6.5+ (1.833xRT03) is currently installed on each
computers hard drive.  I have heard that it's important for everyone to be
running the same version of R:BASE.  Does this mean I need to lock  everyone
out of the databases for an afternoon while I run from computer to computer
deleting the old version and installing v6.5++?  Any tricks or advice to
facilitate the transition?  Thanks!

Cheryl