Question about a new Mother Board and CPU

[CassH]

I am going to uprade my computer and not just a small upgrade by getting more Ram or a better video card. i am going to get a new mother board and CPU but i dont want to get a hole new computer. is it possible for me to just switch out my old Mother board and CPU for these.


* http://www.ncix.com/products/index.p...anufacture=AMD

* http://www.ncix.com/products/index.p...facture=SOLTEK


If i just change them am i going to have some problems with my Hardrive and will i have to Reformate?

And should i look into better Cooling all i have now is the stock fans that came with the case whitch keeps my current CPU (AMD athlon XP 1.4Ghz) at around 30C.

Thanks for any help, please ask if i was not to clear on something you need to know. i dont know much about hardware but im trying to learn.