An alternative is to use a wireless/ethernet converter (e.g. the Linksys WET11) to connect the empeg to your wireless AP.

Oh, by the way:

If you don't need the device to be really small, I would recommend using the WAP11 instead.

1. It is cheaper than the WET11, and
2. it is more flexible, since you can also use it as a bridge (which you need if you want to use a laptop in your car once in a while (wired to the "car network" which is connected through the WAP11 in the house).
3. The WAP11 can be updated to run at 22MBit instead of 11 if your flash a D-Link software to it instead of the LinkSys software. This also enables you to increase the antenna power level.
   

Don't know wether the last point also holds true for the WET 11 as well..

cu,
sven