MacBook Pro :: Battery 'Needs Service' After Updates

my battery is no longer keeping a charge and says "need service". It never went through the other stages of battery digression (replace soon, replace now) just straight to service asap with no charge.I had gone away for the weekend and this is all i did the last session i had my computer on.I installed the java update from April 3-4 2012 in the software update and also ran a script search for trojans that i got off a cnn article. Usually i am not a sucker for these scare articles but something urged me to believe in it so i downloaded the two files (looking now they are mac applications) named trojan check 1 and 2. The search cam up null, i sighed relief patted my mac and shut it down. I disconnected the power because i was going to be away. When i cam back last night, a 2 hr charge was burnt up in about 20 mins. I thought maybe it was just running out from the weekend so i powered down charged over night. Still no charge. I did the sleep,reset,power off cycle then reset the smc. Still no charge.  Here is my battery info. [code] I am almost positive i am under warranty still. It is a little confusing, basically my credit card doubles any warranty i receive. So my 2 year apple care turnedinto a 4 year. I think. Anyway i need to look into that before i can bring it into a store. But i wanted to get as much info as i could before i take it to a genius.

Info:
Mac OS X (10.5.5)