Henry my bro Why, if i write "cd /home/user/MyDocs/maemodder/" you write : cd /home/Henry Nguyen Nokia N900/ ?? xD The name of the main directory of the device (the which one where you put your file) isn't the name that you see... ITS NAME IS "MyDocs" and its patch is "/home/user/MyDocs" By the way ... install the dependency first (apt-get install ecc ecc... you can find all in the first post ) and then install the deb simply rtapping on it in the file manager.