So I use this site to get a bunch of free stuff http://www.prizerebel.com/index.php?r=410982 and I can get either a PSN 10$ or a HDmi cable so which should it be?

HDMI cable.
You don't have one yet, right?

HDMI no question asked..its like having a HD TV with no HD

Isn't the HDMI A square cable that only goes into HD tvs?

^ yea..u dont have a HDTV?

You should get a HDMI cable.

Well I'll be getting one in the summer for now I just move the ps3 to the living room cause thats where we have the plasma HD,and I move it back to my room which has a standard box shape T.V. so should i get the HDMI when I have the HD tv in the summer?cause thats when Ill get a job and Ill buy one

how often do u get the opportunity to play on the Plasma?

Well they start using it like at 5:30 and i could use it like at 5 so i guess 30 mins and when i dont have school and my moms at work I could use it all day until she gets back so yea that seems about right