Cellular phone service in Swaziland, Africa?

I will be traveling to Swaziland, Africa, this month. I have Cingular service. Cingular service is not available in Swaziland (international calling plan), but I have been told I can buy or rent a SIM card for my cell phone in South Africa that will allow me cell service in Swaziland. Does anyone have experience [...] http://bit.ly/ofh7bz