Chuck,
I have done this, many times, and it's a pain in the ****. I have a place 1/2 mile from here, and I have two directional antennas facing each way, with two routers designated as the "sending unit" and the "repeater unit" and it was expensive, and used every single bit of computer IP address knowledge I could muster, and took me many many hours to set up, and it is "worth it" because now 500 bucks later and lots of time later, I have high speed wireless at a remote location.
Now, hear this:
The BEST way to do it, if you have a shop that is less than 300 feet away from your house, is to bury an ethernet cable Cat 5E that is for direct burial, and bury it under the sod, and run it out there, and then put a wireless router out there that does NOT assign IP addresses. (In other words it should not be set up as a "DHCP" server, but instead a "client").
Otherwise, if you want to go down the road of an honest-to-goodness wireless bridge repeater setup, I recommend "www.radiolabs.com" and you can email them and get started with the directional antenna setup.
If there is ANY way to run a line, beneath the sod, of standard-issue underground ready Cat5E cable, go that direction. That's what I ended up doing for my building that is 160 feet from the house. The direct wired connection is worth it.
http://www.amazon.com/dp/B007P5S172/?tag=atomicindus08-20
You can get longer cable.
Also, once I got it there, I hooked it up to a splitter, also known as a "switch" which then lets me hook up many more things to the system "wired".