Hello i am trying to make a 3d game project using openTK on C# , but i cant find any model loading library to use , and i can't seem to find any thing to help me load 3d models or simple key animations . am using VS2010 C# for this project any help would be really really reallly appreciated .Thanks for your time

You could check the OBJ model format, or the MD* (MD2, MD3, MD4, MD5) collection of formats used by Doom/Quake.

Just Google any of them (primarily the OBJ format, because i'd say it's the simpler) and i'm sure tutorials will show up.