There's a guy selling EMU compatible memory on Ebay (uk) at the mo. Quoted me only ?30 to upgrade to the full 128Mb, so guessing 64Mb should be pretty cheap! Can't remember his name but he lists in the sampler section. Helpfull chap too.
i think you can use normal 72-pin,
non-parity (8 chips per side) Memory Sticks
i already used my old pc ram, but i only have 32 mb...i want to have 128 mbs also,
so i assume its better to have 2 64 mbs sticks...cause this is ancient ram--and they love to come in pairs for some old reason...I dont really know if a 128 stick would work by itself...
I used them about a year ago to get 2*64 meg. It only took about 4 days for the memory to reach me and that included a weekend! I'm certain that a few others on this forum have used these guys as well.