Here are some textures from DMC4 hat I ripped from the PC version. Just the ones I thought anyone would find useful. There were some map textures in there, too. But these are mainly flames, some charcter faces and text. I think it would all look nice in-game. :]
They're all in .DDS format, so you'll need photoshop with the dds texture plugin to see them.
http://www.ilupokemon.net/downloads/DMC4Textures.zip
Hope you guys fine it useful! :]