Installing celeron processor

[AshutoshM]

Hello! I have a Pentium 3 processor 866Mhz. I want to install a celeron processor into my mobo.
My computer specs are here: http://www.hotshare.net/en/image/355916-2555150153.html

I want to know that can I install a celeron. I am buying a celeron and that I am getting for very very cheap rates as it is used processor.
Here are my choices:
1. Intel CELERON D 2.93GHz/256/533 SL7Q9 CPU Processor
(link: http://cgi.ebay.in/Intel-CELERON-D-2-93GHz-256-533-SL7Q9-CPU-Processor-/120681270862?pt=LH_DefaultDomain_203&hash=item1c192a0e4e)

2.Intel Celeron 331 CPU LGA 775 2.66 GHz
(link: http://cgi.ebay.in/Intel-Celeron-331-CPU-LGA-775-2-66-GHz-Used-Warranty-/110650881379?pt=LH_DefaultDomain_203&hash=item19c34e7563)

Which one should I install and how?
Thanks in advance.

I have this(below are links) kind of processor. But, the celeron I am planning to buy looks different. Will that fit in my mobo or are they same?
This is not my actual PC photo. This is just an example.

links: 1. http://www.fonerbooks.com/replace/cpu_4.jpg
2. http://www.fonerbooks.com/replace/cpu_13.jpg

 

[Snet]

Well the PIII Mobo is socket 370 which means you need a new mobo and RAM to install this in ur PC.

 

[AshutoshM]

Well the PIII Mobo is socket 370 which means you need a new mobo and RAM to install this in ur PC.

But, I read in the manual(datasheet) of i810e that my motherboard supports celeron processor also.
Which celeron processor can I install then? Please, give links for better understanding.