Mac won't stay running, no internet? PLEASE HELP!

Question

Hi,
I have a 13" macbook pro.bought it refurbished and it was perfect- in january i brought it into a mac & pc repair shop since it was running a little slow and refused to burn CD's.
The problem they said was the operating system and the battery, so they reinstalled the operating system with an upgrade and the battery but now the laptop isnt running properly at all! ive never seen it so bad.
When it starts up it doesnt remember date & time, or network preferences. the battery condition says "replace" and when it does remember networks it wont connect as it says it doesnt have an IP address or has a self assigned IP address most of the time. and now wont stay powered on without the AC charger being plugged in even though its says its fully charged. The guarantee on the repair that i paid for isnt valid anymore.
how can i fix this? ive already reset the PRAM by holding down cmd,alt,P,R al at the same time as the computer starts up but hasn't helped.
These are the power stats.:
Battery Information:
  Model Information:
  Serial Number:          W01055TW4D3BA
  Manufacturer:          SMP
  Device name:          bq20z451
  Pack Lot Code:          0000
  PCB Lot Code:          0000
  Firmware Version:          0201
  Hardware Revision:          000a
  Cell Revision:          0158
  Charge Information:
  Charge remaining (mAh):          5326
  Fully charged:          Yes
  Charging:          No
  Full charge capacity (mAh):          5423
  Health Information:
  Cycle count:          57
  Condition:          Replace Now
  Battery Installed:          Yes
  Amperage (mA):          0
  Voltage (mV):          12459
System Power Settings:
  AC Power:
  System Sleep Timer (Minutes):          0
  Disk Sleep Timer (Minutes):          0
  Display Sleep Timer (Minutes):          0
  Wake On AC Change:          No
  Wake On Clamshell Open:          Yes
  Wake On LAN:          No
  Current Power Source:          Yes
  Display Sleep Uses Dim:          No
  Battery Power:
  System Sleep Timer (Minutes):          25
  Disk Sleep Timer (Minutes):          0
  Display Sleep Timer (Minutes):          20
  Wake On AC Change:          No
  Wake On Clamshell Open:          Yes
  Display Sleep Uses Dim:          No
  Reduce Brightness:          No
Hardware Configuration:
  UPS Installed:          No
AC Charger Information:
  Connected:          Yes
  ID:          0x0100
  Wattage (W):          60
  Revision:          0x0000
  Family:          0x00ba
  Serial Number:          0x002b46f4
  Charging:          No

Answer 1

You might try a SMC reset:
http://support.apple.com/kb/ht3964
However I suspect you have some hardware issues that can best be addressed at an Apple store genius bar.
Ciao.