A few NewB memory questions...

Can I run a DDR PC3200 module when the processor is 400mhz FSB?

Also, will memory from a vendor other than that listed on the manufacturers site work? This is an Asus P4PE-X motherboard and I have Corsair memory.

DDR400 or pc3200 is made for a stock board at 400mhz

if that is what your asking

the memory listed on the motherboards page isn't IMO that important any good quality ram of at leas pc3200 should work