Bei meinem Perl 5.6 ist das unter PPM 3 so:

ppm> rep
Repositories:
[1] THX5
[ ] AS
[ ] AS2
[ ] Bribes
[ ] lokal
ppm> rep descr 1
Describing Active Repository 1:
Name: THX5
Location: http://theoryx5.uwinnipeg.ca/cgi-bin/ppmserver?urn...
Type: PPMServer 2.0
ppm> s DateTime
Searching in Active Repositories
1. DateTime [0.2901] DateTime base objects
2. DateTime-Locale [0.22] Localization support for DateTime.pm
3. DateTime-TimeZone [0.37] Time zone object base class and factory
ppm> descr 1
====================
Package 1:
Name: DateTime
Version: 0.2901
Author: Dave Rolsky <autarch@urth.org>
Title: DateTime
Abstract: DateTime base objects
Location: THX5
Prerequisites:
1. DateTime-Locale 0.21
2. DateTime-TimeZone 0.26
3. Params-Validate 0.76
Available Platforms:
1. MSWin32-x86-multi-thread
====================

ppm>

Also es gibt schon ein Repo wie du siehst ;)
Füge mal TheoryX5 alias THX5 (Dast ist Randy Kobes Repo) hinzu und suche dort.