So it looks like it is a Pi circuit, last schematic here.
http://www.thebox.myzen.co.uk/Tutorial/De-coupling.html
However, for such high frequencies you need a ferrite to wind the coil on that is good at those frequencies. You also need capacitors that will work at those frequencies. These tend to be small ceramic ones.
However, there are components called feed through capacitors that are designed to be mounted on a chassis and the power actually goes through the capacitor.
Make sure that the inductive reactance Xl = 2Pi FL is about ten times as the capacitive reactance Xc = 1/ 2Pi FC