Air Cards & multiple notebooks

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We are planning to attend a 4-day trade show in Sacramento where there is no Wi-Fi in the building. We are told a USB "stick" antenna and cards loaded with MB will work. Do we need a separate stick for each notebook? Or can the two computers be networked with just one stick? Our only other choice is hard-wiring in order to browse the Web.  Thanks.   

[#2]

You need a router to share the USB modem across several computers.  I recommend a CradlePoint CTR350 or MBR1000.  I have both of them and they work great.  I got mine here.  http://moremobileinternet.com/

[reallyniceguy]

Try out the Verizon mifi, its a portable router thats a data card at the same time. wireless router that is.