I use skype for international calls at my home.The sound quality is good and the breaks are very few.My only complaint is that it doesn't allow video chat.I have yahoo messenger also but sound is not good and breaks are too many.

I have made a search on
video conferencingand came out with a few players like
gotomeeting.com,netviewer.co.uk,centracall, megameeting.com.
Previously it was necessary to download and install complicated Internet meeting software and buy expensive equipment in order to enjoy the convenience of Internet meetings and webinars.
megameeting.com has taken web and video conferencing services a step further with new, 100% desktop, browser based web conferencing services and webinar software that does not require any special installation on your computer. Meeting online has never been this easy!
Online conferencing will not break your budget! In fact, when you add up the travel costs that you will save when you hold meetings online, the costs of this service become negligible.

video conferencing is available in four versions, suited to individuals, small companies, large organizations and companies that wish a “private branded version.” MegaMeeting claims that it offers superior Web and video conferencing solutions at a fraction of the cost.