[Spambayes] Installing Spambayes

[Bryan Marshall]

For those of us who are less computer-literate, what does this mean?:
 
Once you've downloaded and unpacked the source archive, do the regular setup.py build; setup.py install dance
 
I cut and paste this language from your download page.  I'm trying to install Spambayes, but I don't know what the above language means.  Please advise.
 
Thanks,

Bryan Marshall