Packages ! get the current ones???

[Richard]

After downloading and researching many packages, for install,
I have come to realize that all the packages  for the most part,
the one NOT in the Ubuntu realm are not current.

xmcd (2.6-17) Is one that comes to mind,
so, how does one get the current version (3.3.2) (which is not listed)
and have the simple install (aka: synaptic installer)?

please I'm not a command line guru.

Thanks in Advance.
Rich