How can i convert my pk.SAV fileinto pk.SV2 file???

I want to play pk with my friends in NOCASH emulator but i everytime i want to rename the file into pk.SV2 the pc read it like pk.SV2.SAV
So please help me and excuse me for my poor english, i'm from south america.

You need to disable the "Hide known extensions" function in Windows' folder options. Just go into any directory (My computer, for example), click on "Tools" and then "Folder Options". Then click the 2nd tab and look for the hidden known extension's checkbox, uncheck it and accept all changes. Try it now.

Sorry for the steps, but my OS is in spanish and I don't really know how is it in english.

thanks a lot...
I had this problem few times, i mean i played pk crystal with my friends, but now i bought a new pc so i didn't know what's going on... thanks again...




AND IT WORKS!!!!!!!!!!!!!!!