Will a Micron MT 16LSDT1664 AG-10EC7, PC 100-222-620, 100 mhz, CL2, 128 mb work in my HP 6635 HP Pavilion?

I need to add some RAM to my dad's old HP. I have found used memory cards for sale on E-Bay but did not know if these would even "fit" or work in this HP 6635 Pavilion computer.