|The 2.3GHz P4 is a socket 478 part. You cannot upgrade to a C2D processor.|
However, 2.3Ghz is kind of a strange clock speed for a P4 (OEM?). Might it be an underclocked 3.06GHz P4?
HTPC | Pentium M @ 2.82GHz, 2MB L2) | 4GB | 1.0TB | Radeon HD5750
Blu-Ray | Win 7 Pro | HDMI out to Onkyo TX-SR707 AV receiver