henrik@Caligula:~$ sudo dpkg -i openttd-1.2.3-linux-debian-lenny-i386.deb
dpkg: considering removing openttd-data in favour of openttd ...
dpkg: no, cannot proceed with removal of openttd-data (--auto-deconfigure will help):
 openttd depends on openttd-data (= 1.0.4-6)
  openttd-data is to be removed.
dpkg: regarding openttd-1.2.3-linux-debian-lenny-i386.deb containing openttd:
 openttd conflicts with openttd-data
  openttd-data (version 1.0.4-6) is present and installed.
dpkg: error processing openttd-1.2.3-linux-debian-lenny-i386.deb (--install):
 conflicting packages - not installing openttd
Errors were encountered while processing:
 openttd-1.2.3-linux-debian-lenny-i386.deb
henrik@Caligula:~$