Inspiron 1150 CPU upgrade questions

First of all, is it even possible to upgrade the processor in the Inspiron 1150? I have heard the Inspiron 1150 has an Intel 82852GME chipset, and supports Pentium 4 (478 pin) processors, and the 400 FSB Pentium M processors. Do you recommend me to upgrade from a 2.8 Ghz Mobile Pentium 4 to a 3.06 Ghz Mobile Pentium 4 or a 1.7 Ghz Pentium M? I have heard from some of my friends that as long as a processor has 478 pins it will work. Is that correct, or does the chipset not support Pentium M processors? Thanks.

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inspiron_user1150