very few laptops can have there CPU upgraded easily, if you have to ask if its possible, I’m sure you don’t have the experience to do it (no offence), furthermore, the jump between 2.0 and 2.4 is not really that much, especially with a laptop. Even if you could get it in there, the motherboard would have to support it, which would take a bios update. As for the ram, that is easy, I googled Compaq Presario 1500, it takes 200-Pin DDR SO-DIMM DDR 266 (PC 2100), the memory on that site is a major rip-off. Also don’t be confused, DDR and DDR2 both have the same pin count for SO-Dimms, you want DDR
http://www.newegg.com/Product/Produc...82E16820145482
http://www.newegg.com/Product/Produc...82E16820141322