I get a sense that I should really know the answer to this question, but I dont. I've even googled it too...no luck...

What is my computer architecture: i386 i586 i686? How do I know this anyway? Does anybody know a good link which discussed the differences...
my system is:

a7v8x-x Asus motherboard
athlon-xp 2200+ processor (socket A, im not sure if this is needed)

I believe any other info is irrelevant in determining architecture...

thanks,

b