Thanks for the help guys!

The two shields look relatively easy to use, but the RFID reader seems quite difficult!
I do not have any arduino hardware yet, but i figure an UNO board is what I would need to put these together.

Is there any other solution I could use besides arduino to meet my goals?

I wish to create a "smart" room where when I walk in the following happens:

1. I am greeted by a voice saying "welcome"
2. The voice asks if I would like to enable higher functions (turn on PC)
3. If answer is "yes", turn on PC.

My idea is the following:

RFID sensor picks up my RFID tag  -->  Arduino hardware greets and asks question --> If "yes" is heard through mic, turn on PC.

If this sounds feasible than great!  I just don't know where to begin with this project.  Any help would be appreciated!