So what I need is a ragdoll:
When I kill an enemy his body has to be frozen in the moment he die!
If someone didn't know what I mean an example http://vimeo.com/7567271
Now I want to know 'How to do'!
Is what I need a program or can someone else do this beautiful work for me?
You could probably edit the ragdoll physics to make the ragdolls not do anything. There's a ragdoll physics section in the skins section if you wanna download and modify one of those, or find the file in the CS:S GCF yourself.