I've tried to download the mining craft texture and it went fine
I
have unpacked the zipped program and gone into the folder I should be
(C: \ Documents and Settings \ myname \ Application Data \. my craft \
bin) somebody it says I need so I had to find Minecraft.Jar but is not me who is only here as the picture

cant unzip it anything but have the program

(its a Windows Xp computer and its not vista i have only find a vista theme)

Please Help Me