Ok .. it's done, but i got the same error ..
I downloaded the debian package via my computer, put it in MyDocs via usb, move it in /home/user via filebox.
Open a terminal
devel-su > password
cd ~user
dpkg -i xmimd_1.2_armel.deb

"Aegis rejecting xmimd_1.2_armel.deb: package 'xmimd' already installed from 'com.nokia.maemo/local' -- not replacing it from unknown origin
aegis aborting dpkg -- all listed package files rejected
Compilation failed in require."