i think that p button is for "a power save mode" if thats what you want to call it. On the sentia when you press that button it will slow the processor to save battery life.
Can anyone tell me a little about the HP dv1000? If i got that with a
Processor: 1.8 GHz Pentium-m
Screen: 14.0" WXGA BrightView Widescreen (1280x768)
Graphics: Intel(R) Extreme Graphics 2
Memory: 256MB DDR SDRAM (1x256MB)...