ME-109 skin?
So you want to add a new unit to the game, right? If you have just a .dds file and want to use it as a new unit, you have to do several steps:
-make a copy of the art folder of the the unit your skin is based on. In your case this will be the fighter.
#Note: you have to unpak the fkp files in your Assets to get the art folders of the units.
-rename that folder (otherwise the game would use this art for the original unit)
-copy that folder to Customassets\Art\Units
-copy your skin in that folder. you' re gonna be asked to overwrite file, click 'yes'.
now the reskin is at the right place and you have make some xml work
I suppose that your want it as a unique unit for Germany.
- go to assets/xml/art and copy the artdefineunits.xml to customassets\xml\art
-assets/xml/units civ4unitinfos.xml to customasstes/xml/units
-assets/xml/civilizations civ4civilizationsinfo.xml to customassets/xml/civilizations
in the (copied!!!) civ4unitinfos.xml search the entry for the fighter, copy and paste the entry and change <Type>UNIT_FIGHTER</Type> to <Type>UNIT_ME109</Type> dont change the unit class
<Description>TXT_KEY_UNIT_FIGHTER</Description> to <Description>ME 109</Description>
at the end of that entry
<EarlyArtDefineTag>ART_DEF_FIGHTER</EarlyArtDefineTag> to
<EarlyArtDefineTag>ART_DEF_ME109</EarlyArtDefineTag>
in the (copied) civ4artdefinesunit.xml copy
copy and paste the entry for the fighter, rename it like above and point the links for the .nif and _FX.nif file to the folder of your new unit.
in the (copied) civ4civilizationsinfo.xml search the entry for germany, scroll down till you find the panzer.
<Units>
<Unit>
<UnitClassType>UNITCLASS_TANK</UnitClassType>
<UnitType>UNIT_GERMAN_PANZER</UnitType>
</Unit>
</Units>
change it to this:
<Units>
<Unit>
<UnitClassType>UNITCLASS_TANK</UnitClassType>
<UnitType>UNIT_GERMAN_PANZER</UnitType>
</Unit>
<Unit>
<UnitClassType>UNITCLASS_FIGHTER</UnitClassType>
<UnitType>UNIT_ME109</UnitType>
</Unit>
</Units>
and everything should work ;-)