Sorry, I shouldn't have linked to it like that.

PPM::UI is part of the ActiveState installation. On my machine, it lives in d:/Perl/site/lib/PPM/UI.pm.

Here's the transcript to demonstrate:

D:\>perl -demo

Loading DB routines from perl5db.pl version 1.28
Editor support available.

Enter h or `h h' for help, or `perldoc perldebug' for more help.

main::(-e:1):   mo
  DB<1> use PPM::UI

  DB<2> p $INC{'PPM/UI.pm'}
d:/Perl/site/lib/PPM/UI.pm
[download]

However, ppm3 doesn't seem to know about PPM::UI -- at least, you can't query PPM::UI, or search it, etc. In fact, I find the search and query functionality oddly designed, as I have to know the distribution name, or work at figuring out the wildcard/logical expression to match it. Maybe I just don't know how to use it.

So other than installing ActiveState, I don't know where to get PPM::UI from. Which means if there's an update, it's either buried in PPM, or it's part of the ActiveState install package (and then you only get the update when you update Perl).