Hi, i have this dell cpt 333GT; it has one 128MB 100MHz module and i have another 128MB 66Mhz module too. Is it possible to mix both type of frecuencies in this models? i can put them both in there but suddenly it throws the blue screen of death saying that ther "might be a problem with ram maybe a speed mismatch etc etc etc" and its hex code. Can this two types of frecuencies 100 and 66 can be mixed in this models? thanks in advance.