Non spawning imported models

Ive tried every way i can think of or find on google to try and make this work but it wont.

I’m trying to install this shotgun fix and TF2 style Thompson
http://www.filefront.com/13903533/TF2_Thompson__Shotgun_fix.rar

The icons appear in the spawn menu but when i click them they dont spawn.
If anyone can tell me exactly where to put the folders, if there is a setting i need to change or just what im doing wrong i would really appreciate it.