Set up an encripted ad hock wireless network on your laptop. An ad hock network allows other wireless devices to connect to your laptop without going through a wireless router. Share your images folder from your laptop with write access for users who connect to your network. From there just set your EyeFi card to connect to your laptop and upload to your shared folder. Make sure you are careful not to share your pictures folder for public networks your laptop may connect to. You don't want just anybody to be able to read and write to your pics folder.
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The card requires DHCP, which it cannot resolve over ad-hoc. The laptops' onboard wifi might be able to do this, depending on the wifi chipset it has. A much simpler option is to obtain a wifi card with access point capability to plug into your pcmcia slot. A very popular one is the Asus WL-107g. It can be found for under $30. Manufacturer and shopping search results are linked below. If you are using windows, you can attempt to configure a new wireless connection to see if you have the option to act as an access point and DHCP server. In WinXP, go to control panel/network setup wizard. In Vista or Win7 go to start, select network, then select network and sharing center. Choose "set up a new connection or network" from the list in the main view pane. If you are fortunate enough to be able to do it this way, it may require undoing before you use your laptop wifi normally. Networking doesn't always follow the rules. I would not try to set the laptop as a DHCP serving access point. Good luck.
Source(s):
http://www.asus.com/products.aspx?modelmenu=2&model=52&l1=12&l2...

http://www.google.com/products?q=asus+WL-107g&btnG=Search+Products&...

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