They are free, you just download them and burn them to a CD using the "Burn Image" or "Burn ISO" function of your cd burning software.
An example is
www.ubuntu.com
All you would really need to do is boot it up, open a web browser and see if google works. May be a bit overkill for what your looking for though.
Edit I wouldnt try that just yet though, see if me or some other member comes up with a less drastic solution
Can you please tell me if you are getting "Limited or no connectivity" at the moment or not?