Here's an interesting little experiment. I recently downloaded Skype - the internet telephone system which you can use to make calls to people on other computers. The quality is great, much better than web chat or anything like that. You have to be on Skype to be able to call me - you can download it free at www.skype.co.uk - and as long as I'm available (the link on the site will tell you) we can have a chat, if you like! It'll be interesting to see how that goes. The free download link is below the advert for the 'Pro' service and the calls - between computers - are free too.
I'd recommend you either use a headset with a microphone or use a microphone and headphones when using Skype.