WTG PotGuy - thanks for joining mate!!
Boinc is the program that manages the 'crunching' of the science, from initial downloading to sending back once completed. It is more efficient than the the other agent at WCG and will crunch more results and give more points for your effort.
Down load the latest version from
HERE, just click on the exe and it will install like any other program, select the 'single user' install if only you use the PC.
Once installed you need to 'attach to the project' ie WCG - put in the web address
www.worldcommunitygrid.org then in the next box put in your username and password you set up at WCG.
It will then attach to the project and start downloading and crunching - basically thats it - just leave it to run in the background by reducing it to your system tray (click on red cross top right)
If you want to select particular projects at WCG - then log in at the site and go to My Grid>Device Manager>Device Profiles>Boinc Default Profile and selct from there.
Any other help just shout
Edit: Looks like you've started whilst I was preparing this....