When i try to run the Anti Malware toolkit, i get an error that says:

.NET Framework Initialization Error

C:\windows\microsoft.NET\framework\v2.0.50727\mscowks.dll could not be loaded

any suggestions ?

Try to register the DLL or reinstall .NET, you can also upgrade to .NET 3.5.

How do I register the DLL or reinstall the .NET ?

I don't know how to register the DLL or reinstall the .NET

To reinstall, just run the .NET installer. It's the easiest method.