Gotta share this with you--if you don't already know about it:
http://www.magicjack.com/4/index.asp This is a very small piece of hardware, once configured correctly, will allow you to call anywhere in the US and Canada, I think--any time of the day or night. FOR FREE!!!
I had read about it in a computer magazine and forgot about it until just a few days ago. Paid $45 including shipping for it. Each year hereafter, the annual charge is only $20. I have just called several friends/family for FREE. Take it with you when you go away and it will work on ANY XP, or later, that is running a broadband connection and has a USB. A good find, I think and has a 30 day free trial.