[tnkgrl] has concluded her Sony Vaio P by adding GSM support. We covered the switch to XP earlier, however this ought to work on Vista too. The Vaio P is sold in the us with support for Verizon’s EVDO wireless broadband, however it uses the exact same hardware as the European design that uses GSM. This is possible since of the the Qualcomm Gobi radio module. To get GSM support, you technique the VZAccess manager into loading a different firmware than the stock EVDO. The challenging part is that the Vaio P doesn’t come with a SIM card slot, so you’ll have to solder in your own. When you’ve got the computer reassembled, just modification VZAccess manager to utilize your carrier.
UPDATE: Wired has an short article on the Gobi chipset.