ON this BOINC page is the following statement:
http://setiboinc.ssl.berkeley.edu/sah/transition.php
* Hosts that have no network connection currently cannot participate in
BOINC. A solution may be developed in the future. 
  AM I to understand that I must have an always on internet connection
to use BOINC? Or can I download WU and connect when I want to upload
results and upgrades?
  Those having a dial up connection with limited
hours[150hours/month,then $1 hour after] or those that pay by the length
of telephone call to their ISP would not be able to afford to run BOINC.
  I understand where BOINC needs to do upgrades.But can that be done at
users request.
  Or did I misunderstand that statement?
  I cannot leave my internet connection on at all times.