I resolved the question yet.
My question now is... the handrails... for example, in the way to the GLaDOS fight, what model or texture is?

thanks

edit: anyone? and you know how change the background? i dont find the correct folder...

Do you think what this can help me?
You can be a moderator, but that dont give you power for joke of me... i need help, not laughts jilpoys...

If its a model put a prop_static entity down and the filter for "handrail" or "rail" or a similar word

If its a texture, open the texture browser and filter for words like "metal" or "railing"

For future reference: don't ask questions like this because you will be laughed at because its like asking "how do I spell magnificent" - presumably you have a dictionary (the model/texture browser) so look it up!

ok y try it, but i?m noob, it?s normal what i dont know everything!
What is exactly "lol wut"?

m la bais a kmer con cbolla y patatas fritas maldits palulos...

= "laugh out loud... what?"

Use this - http://developer.valvesoftware.com/wiki/SDK_Docs to find most things you will need

As it has been stated probably 100 times or more here, this is honestly not the best place to start if you have never done any sort of Source mapping before. If you are a complete newbie to Hammer, I would recommend visiting sites like Interlopers or Halfwit-2 and reading the tutorials they have there. We are centered around Portal specifically, not about how to do the basics. Sorry.