9000, what you want him to do simply is not possible. To install packages in the terminal, you need root rights. For root rights i the terminal, you need rootsh.
When you attach the USB to your PC, it should ask you whether you'd like to connect as mass storage or pc suite, choose mass storage. Then in your computer you should find a new drive. Copy the file to the new drive.
Detach the USB, and return the drive back to your N900. Type the following command under xterminal:
Code:
cd MyDocs
sudo dpkg -i rootsh_1.8_all.deb
The commands are case sensitive.
Please refer to the following wiki if you'd like to reflash instead:
hey u guys im also having this problem. im not finding any networks even though i have them around. i tried what you sed. i installed rootsh, then i typed sudo gainroot and then typed each one of those three commands provided and still cannot find any wireless networks. help please