Garry's Mod

Garry's Mod

TF2: Weapon Skins Hex Models pt 1
I don't know how to use the skins, please help!
In the old C.W. 2.0 Tf2 Skin Packs it shows to press F1 to open the skin menu,I have the old ones installed also but, when I press F1 it brings up the spawn menu. Please help!