I want to help my friend to add memory. But on her mainboard she have 2 kind of memory : 2 sockets DIMM SDRAM and 2 sockets SIMM EDO/FPM DRAM. If She have a 64 MB installed on a SIMM EDO DRAM can I add 64 MB DIMM SDRAM ? If yes, Does the total of memory will be 128 MB or the system will only see the 64 MB SIMM EDO DRAM installed ? Thank you for your help.