JetRanger wrote on Nov 4^th, 2011 at 8:31am:

BULLITIN NOTICE UPDATE : 11/4/2011 : I now have a "tga" Trans Global Airlines  Texture, with shiny reflective textures for the Boeing 707-320C,,, problem is, its not in the right format , that being a DDS File format for "FSX" Gold acceleration edition,,,, it more for like 2002/2004/fs9 edition,,, I will be working trying to convert the file so it will work, properly, I'll have to test it several times 1st in my Sim,,,, like 7 to 10 times to make sure its right,,,,, before I start giving it away,,, may be a tad bit of a while, be patient,,, I've got a lot going on here at the moment anyway,,, but, I will get er' done !!  The JetRanger  :-X

FSX can see textures that are used by FS2004/9 mdl's. So as long as they are BMP files, you should be fine.