thanks for your interesting tip.
But I would not answer if there is no problem.
I download the unrar-3.9.9-arm.gz file and ungz it with gunzip. That what i get was only a unrar-3.9.9-arm file
without a format.
Maybe i have to move the file or use a command?
And this with the deb file... i did not find the solution fom the link what silver18 posted to extract the tar.gz from the .deb file.
I know the command is named by ar but do not know how to add this in xterm.