for the past one year, both she and I have been spending lots of money in SMS and phone calls

... few hundred a month. We both feel we are wasting lots of money. I suggested using yahoo/msn to chat, at least can see each other via webcam, can talk over yahoo voice.
she knows a bit about computer usage, using yahoo/msn should be no problem, but she hates to go to internet "cafe" or may be lazy. Now she wants to buy a laptops or PC to be used at home.
the technical questions now:
In vietnam (hcm), is there any home internet services like dial-up, home broadband or even mobile broadband (those with mobile modem like a USB sticks)?
Any of their mobile phone service providers got offer these kind of internet services? and what are the monthly cost?
Thanks for information .... On behalf of my "female vietnamese friend".