What kernel to install for AMD Core 2

[eduard]

I have just bought a new laptop but i have some doubts and problems, and 
  need some recommendations.
I have an AMD 64x2 and have installed kubuntu dapper 32 bits i386 (i 
decided to wait for the 64 bits distribution), but i would like to take 
advantage at least of the two cores. What kernel should i install? There 
are some kernel related "words" i can not fully understand: smp, 
multicore, k7, k8.
Would it be a good idea to install the 2.6.18 version to solve my 
wireless connection problems caused by that thing called bcm4318?
Can i trust in the official ubuntu wikis, helps...to compile and install 
the proper kernel?

Any comment is welcomed. Thanks.

NOTE: Despite i use some technical terms, please, remind i don't fully 
understand their basic implications. It is just that i have spent too 
much time reading stuff.