sir my downloading is done and i have extracted files too .but when i right click on on 7-zip and then 7- zip and open archive it says cannot open file C:/ 7-ZIP/Z7.EXE AS ARCHIVE

What you need to do is right-click on the file named "A3ManiaClient.7z", select 7-zip> Open Archive and extract the files where you want to.
I've compiled this little mini-guide-ish thingy to guide you:

1. You first have to right click this file right here.


2. Then you select 7-zip> Open archive.


3. Extract it to your desired location.

4. The last thing to do, is apply the patch to that specific location.


And that's pretty much it, I guess.

i did u said to me . but when copying is over . it says cannot open that file as archive . what to do now ?

Uhm, for which file exactly does it give the error - 001, 002 or 003?

Just extract the 001 File.. The other archives will be automatically be extracted!