I need help.....NOW.

Hi, I have just bought a new memory stick pro duo for my PSP. 8GB, from Australia and a letter saying if I'm not satisfied I get a 100% refund, yadda yadda yadda......so I was sure that it would all be fine. I got it and it was a 8GB and I hadn't been ripped of, and I put the memory stick in my PSP and then plugged my PSP in. All of a sudden my computer says it had found a virus, but it had cleared it. So it was all good. Then I clicked on Removable Disk (E in my computer to access my PSP to put stuff on to it. It came up with this>>> Can not find script file "E:\snake.exe.vbs". Then all I can do is click yes.......what do I do?!?!?