My MBP 13" Mid 2010 indicate "Service Battery", What step should i take apart from visiting apple store?

Question

the Service Battery Message has been appearing after i upgraded to  OS x Lion from Snow Leopard. Tried reinstalling the previous OS but could not fix the problem.
Am asking what to do to solve this situation. I can follow the instructions and do the process myself instead of taking it to apple store.

Answer 1

But My Battery Cycle is only clocking 415. When fully charged. i can use it for some hours with power code removed BUT the moment i close the lid for it to sleep, it turns off instead. When i don't close while using battery, it sleep without and wake normally when i resume using the laptop. I can plan on buying a new battery but this model's has maximum battery cycle of up to 1000.
Below is the Battery Level information:
Charge Information:
  Charge Remaining (mAh): 3512
  Fully Charged: No
  Charging: Yes
  Full Charge Capacity (mAh): 3806
  Health Information:
  Cycle Count: 415
  Condition: Service Battery
  Battery Installed: Yes
  Amperage (mA): 495
  Voltage (mV): 12457
System Power Settings:
  AC Power:
  System Sleep Timer (Minutes): 10
  Disk Sleep Timer (Minutes): 10
  Display Sleep Timer (Minutes): 10
  Wake on AC Change: No
  Wake on Clamshell Open: Yes
  Wake on LAN: Yes
  Current Power Source: Yes
  Display Sleep Uses Dim: Yes
  PrioritizeNetworkReachabilityOverSleep: 0
  Battery Power:
  System Sleep Timer (Minutes): 10
  Disk Sleep Timer (Minutes): 10
  Display Sleep Timer (Minutes): 2
  Wake on AC Change: No
  Wake on Clamshell Open: Yes
  Display Sleep Uses Dim: Yes
  Reduce Brightness: Yes