Thanks. The ping command appeared to work (though I'm not sure what the result should have been), but using the opendns numbers gave me the same result as before, which was a bit disappointing. Sorry, but thanks anyway.
As for turning off the wvdial command without the hang, it hung the first time I tried it and I'm afraid I didn't bother again (and maybe you wouldn't either if the result was that you had to run e2fsck on the partition as a result).
Sure I understand. Looks like this is ppp related. I will try to find a dial up modem and see what can I find.
Sorry it didnt work, I was pretty sure it was DNS related