I wanted to convert a couple outfit pieces over from Oblivion to Fallout, but the .nif file structures are a little different between them, so I was wondering if anyone knew how that would be done.
Just an eyepatch and hairstyle, nothing so complicated as an actual outfit that would need to be refitted to the shape of the Fallout body.

Try the following links :
http://wiki.tesnexus.com/index.php/How_to_load_Oblivion_hair_models_into_Fallout_3
http://wiki.tesnexus.com/index.php/Porting_hairs_to_Fallout

Oh awesome, thank you. I didn't even know that the Nexus had a wiki with tutorials like that. There's a lot of helpful information there not found in the GECK wiki, especially since the GECK wiki is pretty much devoid of modeling/texturing information.

For some reason the mesh lost it's Alpha setting after transferring it over, so that the ends of the hair don't fade out. Anyone know how I might fix that? Those guides don't talk about it.