Shares of Apple Computer (AAPL) are up $3.46, or 4.68%, to hit a new all-time intraday high of $77.55 per share in heavy volume (18,510,035) morning NASDAQ trading. The company announced the revamp of its line of PowerBook notebook computers earlier this morning. The company will now offer five versions of the PowerBook at prices between $1,499 and $2,699. Apple’s 52-week closing high, set on January 13, 2005, stands at $74.42. Apple’s old all-time closing high stood at $69.562 and pegged $71.00 in intraday trading back on March 28, 2000.

NASDAQ Apple quote (15-minute delay) here.