Hey there, I just got a MemoryStick PRO Duo (Highspeed). Now i know it works because the PSP is recognising it and games are saving (I did format it before I did anything else). Now the problem is when I try to put it into my PC. I have a small 32mb one that auto reads and pops up but when I put the 2gb card in the slot it doesn't recognise it. I don't know what it is but im guessing its the highspeed? I know that it trys to read it because when i click on it manually it sits there and loads for a while then it tell me to insert a disk into the drive.