ASUS a7n266 and CRUCIAL memory

I'm just been asked to build a pc for my sister in law which has given me the chance to try out the asus all in one mobo.. the a7n266(on board vga sound etc). I've built prpobably around 20 pc's and have serviced a lot more and on the whole stay away from intergrated systems, tending to buy seperate graphics cards modems etc.
I'm just waiting for the harddrive and heatsink for the cpu to arrive so havent had the chance to turn it on yet.
i bought most of the componentes ffom scan and tthere was a note next to the mobo which read' we recommend micron memory for use with this board'.
now 2 questions. firstly i know that crucial is a division of micron and therefore use micron chips.. 1. will i have any problems using the crucial that i have(pc2100 unbuffered)?
2. the motherboard manual reccomends that i set the voltage for the memory at the default setting 2.6v.. but crucial web site states that the memory is 2.5v. will setting the mobo to run the memory at the higher default setting cause instability? shouls i run it at its default setting, bearing in mind that this machine will not be overclocked.
thanks in advance for any help

That small of an amount of voltage shouldn't matter one way or the other. Try it both ways, I like to play Return to Castle Wolfenstein for a couple of hours to test stability ;-)

If it works at the lower voltage use it, it'll create less heat.

Catch me L8er!