first things first, does your model show up in the DirectX model viewer(good for seeing if you're model is corrupted or not)?
second, download the entityfromxfiles package from fpscreator.com/files(i think)
third put the texture in the same folder and if there are several put them all in that folder(user in the entitybank seems to be only one the make entities from xfiles.exe reads)
fourth watch the tutorials included in the .zip file with the .exe
fifth if you did everything your model should work in FPSC relatively well
note:makeentitiesfromxfiles.exe is best for static and dynamic props not animated weapons and characters.
I know not what WWIII will be fought but I do know that WWIV will be fought with sticks and stones-Albert Einstein