i386 vs i686 was Configured kernel source code ... What is it

[G Gambill]

Chasing down the CentOS 4 USB WiFi thing I found (on the laptop) a dir/file:

  /usr/src/2.6.9-5.0.3.EL-hugemem-i686
  /usr/src/2.6.9-5.0.3.EL-i686
  /usr/src/2.6.9-5.0.3.EL-smp-i686

I am fairly sure the Laptop in question is a Pentium III (WinBook XL3).  I
have always used the i386 flavor.

I ran a locate -u followed by locate 0.3.EL   and it finds only i686 (no
i386).

Question, do I care?  It seems to run without problems.

I have downloaded the i386 source.

Should I consider compiling the i386 kernel?

TIA

George