Apparently DS2 is such an old game now that installation instructions may be required because they are hard to find on the internet!
- Mods are packed in resource files, commonly with the ds2res extension.
- In your installation of Dungeon Siege II, there should be a Resources folder, such as Dungeon Siege 2\Resources. If you have Broken World installed, find the Resources folder of the Broken World installation instead (possibly in a subdirectory of Program Files\2K Games\ ).
- Copy the ds2res file of the mod into the Resources subdirectory.
- Note that mod makers cannot typically resolve mod conflicts with someone else's mod -- that is, errors caused by two or more mods having modified the same resource file.