Added 7/23/2010 regarding the 50-pin WMOi3 connector:
I get asked often the key question about Wavecom WMOi3 GSM module: where does one find that super small 50 pin board-to-board connector in such configuration as to solder those individual wires meaning the connector has the usual leads exposed after it fits into the module? Well I found it at HSC Electronics Supply,
HSC Electronic Supply - Silicon Valley's Electronic Marketplace
However they don't sell something that small on-line. If you don't know what HSC is, think of a warehouse for components. Endless shelves with parts, most sold by the pond. Little inventory on the web site and every weekend - a parking lot sale