Have you did exactly as MohammadAG described?
1) install rootsh (if it's not installed already)
2) download
http://mohammadag.xceleo.org/public/...+0m5_armel.deb
3) You can download it directly to
Nokia N900 folder (this is as MyDocs is shown in File Manager) or move it into that folder later.
4) Then open X Terminal and enter following commands
Code:
dpkg -i /home/user/MyDocs/hildon-desktop_2.2.138-1+0m5_armel.deb
At first it took sone time for me too to figure out where MyDocs folder is.