help with P6N SLI-FI and CPU

You can download CPU-Z here: http://www.cpuid.com/cpuz.php

When you run it the CPU section will give you all you need to know about your CPU. The most important part is what socket\package it is to determine what mobo you need.
There are\were three P4 sockets: 423,478 and 775. 423 is dead and burried, 478 is dead and the grave is dug, 775 is alive and kicking and hopefully what you have allthough I think 2.4 means you have 478. If so there are still mobo's to be had (atleast second-hand) but your choice is very limited. P4EE is AFAIK an Extreme Edition and if you had one you would remember because of the price you paid for it .
So run CPU-Z and if you're still unsure post what it says here and we'll try to help you out.

GL.

You're welcome. The 200/800 FSB is normal as Intel has a Quad pumped FSB meaning it can theoreticaly access memory four times per clock so the 200 actual FSB becomes 800 rated FSB. As for the socket 478, there are some mobo's listed here:
http://www.newegg.com/Product/Prod [...] =200020028 0&bop=And&SrchInDesc=478&Page=1

but make sure to get it for pentium 4/Celeron as there is a new CPU type(mobile?) that's also specified as socket 478 but those are not compatible.

GL.