ActiveState 5.10 comes with a GUI version of ppm. Just type "ppm" at the command prompt with no parameters and the GUI will start. There is a pull down box for adding U of Winnipeg if you find the right top level tab for this. Although the main ActiveState repository has most of what is commonly needed. Using the GUI avoids these typing mistakes from the command line.

Update:
I looked some more at https://wiki.mozilla.org/Bugzilla:Win32Install
Some instructions aren't right: "To upgrade your modules, simply run ppm upgrade".
Wrong, that only lists the packages that are availble to be upgraded. From the command line: ppm upgrade --install will actually do it.

I went for the gusto and upgraded all of my Perl5.10 packages which took about 50 minutes.

To install new packages, use the GUI to save lots of grief.