Wireless LAN and PDA

Howdy, got a question for you engineers out there.....

I have a dlink 614+ Wireless router. I also have a toshiba e740 PDA. The router is in a trailer about 200 feet from the PDA, and I was wondering if anyone knows of a good antenna/parabolic dish or array I could build to get connectivity. I already have plans for like the pringles can and coffee can waveguides, but cant think of a good way to get that to repeat the signal to the PDA. If I'm making this more complicated than it need be, then please help.

Anyone have a good answer? I'm dying to hear it.