Mem Upgrade

I have been shoppin around for a 256 PC133 SDRAM for this guys computer. He wants me to upgrade the mem in it.

His Specs:

HP Pavilion 6640C
AMD K6-2 500 MHZ with 64mb of ram.

I have just been tring to figure out what brand I should go with in his system. should i go with kingston or another brand..

Hit me back with some suggestions because I'm going to order it tonite.

Crucial
That system isn't worth a lot and sdram is pretty much dying out so whatever is cheap if hes not going to overclock.
I would check crucial to use their memory configurator to make sure that you get the right type of memory as some oem boards are strange.