Can I Install FS2004 Ground Textures Into FSX?

I use Zinertek Night Environment for both FS9 and FSX.  Is it possible to insert or install the FS9 textures into FSX?  I much prefer the FS9 version of Night Environment to the FSX version.

I'd also like to do it for daytime ground textures if possible.  I like GEP and the one by AFS.  Both FS9.

I know most of you will tell me to just fly FS9, but I like the new airplane add ons for FSX.  I also love DX10.  

I don't have a high end PC so in order to get constant 30fps at busy airports with a lot of ai, I have to set my graphics and LOD to FS9's level.  So other than the water, planes and effects, my FSX world basically looks like FS9.  Because of this, I thought why not swap textures if possible.

Any help greatly appreciated.