Cinfigration of the Laptop that I require: A) 2.80GHz Intel? Core 2 Duo Genuine Microsoft? Windows Vista? Home Premium or other editions 13.3 LED backlit display, 4.14 lbs. Up to 320GB hard drive and 4GB RAM Unique Switch mode Up to 6-hour battery Add a Bluetooth? laser mouse for precise navigation. B) Up to 2.53GHz Intel? Core 2 Duo Genuine Microsoft? Windows Vista? Business or other editions 13.1 LED backlit display, 3.42 lbs. Up to 4GB RAM, available Blu-ray Disc drive Up to 6-hour battery Add a Bluetooth? Presentation Controller for wireless freedom. Built-in DVD-RW drive or Blu-ray Disc RW drive  Fast Ethernet (RJ-45) Protocol  10Base-T/100Base-TX/1000Base-T  Integrated V.92/V.90 Modem (RJ-11)  Wireless LAN: Intel? WiFi Link 5100AGN (802.11a/b/g/n)  Wireless WANSprint? Mobile Broadband Service  Integrated Stereo A2DP Bluetooth? technology  Built-in 1.3 megapixel MOTION EYE? camera and microphone  Electro-Static touch pad  Biometric Fingerprint Sensor, Trusted Platform Module(TPM) TCG Ver 1.2 compliant  QWERTY keyboard, 82 keys with 2.5mm stroke and 19.05mm pitch