Sorry if I'm missing something here, but why can't you just get an access point? Wouldn't that be a lot cheaper. And there's no PCMCIA card needed then.

Another addition the idea I found at dashpc.com is use a sync program Then you wouldn't have to worry about copying the files all the time. They are using rsync at dashpc.com.

I just need to know how to build a circuit that cuts power when a certain serial port command is given. Is this possible without microprocessors?

Tom