You'll probably have more luck installing the ppm version, since you seem to be using ActivePerl.

I don't know if you have enough access for this, but try typing
C:\> ppm
PPM> install Date::Calc
If you have enough net access for ppm to work, that will download and install Bit::Vector and Date::Calc for you.

If you can't use ppm directly, check out this link for information on how to download the packages manually and install them.
--
Mike