Need help with the editor

Ok, this could be an extremely dumb question, but in the X-tra editor, how can I select the model I want?
i mean, I've created a new model, and named it footmat (it's based of the footman), but if I want to select a model, I can only select an existing model in the panel.
I had a patch once that made me type the path (like Units\Human\Footman\Footmat), so i could have both the footman and the footmat in the same map.
Can this be done in the X-tra Editor, or do I need another editor for that? If so wich one?
Thx!

i think this is what ur talknig about..

u need to type the string in, i dont have x-tra editor but i think its like UMSWE. You jsut type in the string of where u are gonna put the model in ur map. If u put in in ur map jsut as footmat.mdx in the editor u jsut type footmat. If you put it in as Units\Footmat or sumthin in editor u would put Units\Footmat