Connection configuration of WiFly Shield

Good day,

I've got a EtherTen(arduino uno+ethernet shield) board from freetronics and i would wish to implement a WiFly shield to make use of the wireless capability.

What connection configuration should i use?

I've found tutorials that instructs me to connect the WiFly_Tx pin to pin 2 and WiFly_Rx pin to pin 3. Is this correct?

Also the tutorial says connect the power to 3.3Volts on the WiFly shield otherwise it will fry the shield, but i have got a 5volt power input for my shield. Should i connect it to 5volts on my arduino or 3.3v on the arduino?

I bought the sparkfun WiFly RN-131C shield.

Appreciate the help.