when I downloaded it I can't open it because my computer don't recognise it. And when I let him search on the internet he don't find it, what can I do ?

gompie, Richard wrote:
"To combine zip files together I use Split&Concat (it's free) software for my mac. You might want to find another software for your PC if it's needed."

so you need a prog to combine all the part into one. you can try Total Commander as well (not sure if S&C will work on other comps other than MAC), I usually use this one to divide or combine file parts together.