Which shield?
What wireless router is the shield trying to connect to? What encryption scheme is that router using?
The shield is http://www.sparkfun.com/products/9367.
The router is linksys wrt 54 G with dd-wrt firmware and encryption is WPA-TKIP.
Your thread title really needs some work. It looks like you can't even figure out how to install a shield.
Please suggest me title that I should put.
The first thing I would like to know is how can I verify the Wfily Shield is not faulty.
If this shield is faulty, I need to go to the seller and ask for replacement :D.
Other questions can take time.