I have installed Skype in my Carpc to make and receive calls. I have an USB Belkin 802.11g WiFi adapter and my system is based on Epia M10k Board.
All is working great also for the internet connection, but the audio quality with Skype is very very low.
Probaly these are not bandwith problems, but most probaly may be a duplex Tx/Rx (simultaneous transmission/reception) problem with WiFi dongle....
Post here Your experience!!