I can tell you right now that texture won't work well with the couch.I just tried it and it comes out looking like a red block.
Maybe Sinsitar can find a decent texture for you.
Don't feel bad.It's just sometimes if you try to create a model and use one solid color for a texture it happens.The model itself isn't bad at all.
When I first started importing entities I had the same problem.
There are some threads on the forums that deal with texturing,UV mapping and so forth.Read up on them.They have some useful information.
Texturing isn't my strong suit so I will let someone else with a better understanding of it assist you further.
It is a nice start.Read a couple of tuts,practice a little and you will be churning out good stuff in no time.
If you need a couch right away,Essal has a matching couch and chair available.You can find it in the threads "Free stuff" (a sticky at the top) or "Free stuff now...and more coming" down below here somewhere.Sorry I wasn't any help.
FLa
Where you can find my demo:http://www.savefile.com/files/6970524