new motherboard and cpu with Fedora

[xiaohuli alumni princeton edu]

Hi,

I  plan to put in a new motherboard ( P4 ) and a new
cpu ( p 4 ) into my win-xp/FC1 ( kernel 2.6.1 ) box,
which currently had a P III 450MHZ processor.   Has
anybody done that ?  Do I need to recompile the kernel
?  And what else I need to do for FC1 to work ?

What about Win XP ?  Do I need to reinstall it ? Do I
need to reinstall all applications including games for
XP ?

Would I get into more trouble if I put in an AMD/Athlon
processor instead of Intel stuff ?

Tnanks for the help,

Xiaohu