Ethernet to USB converters

I've looked around the local stores......And cannot locate.

Are there any simple devices ($20-30 range) that allows one to plug a USB2 cable into an ethernet jack? (and have the USB2 device operate as it should). I want to connect a USB hard disk drive into my wireless router, which has empty ethernet jacks on it.

Alex

A simple adapter would not work. You need a NAS server.

If you have and old computer that you do not use, you can run a Linux based server:
http://sourceforge.net/projects/nas-linux/

Or something like this:
http://www.compusa.com/products/product_info.asp?product_code=51447945&pfp=BROWSE
http://www1.linksys.com/products/product.asp?prid=640
http://www.adstech.com/products/NAS-806-EF/intro/NAS_806_intro.asp?pid=NAS-806-EF