Hmm... Black Rose. The way you show to solve the problem is really extremely shitty, but you've inspired me, so I have an idea how to do this without PHP, but this is shitty to

- I check it as soon as possible.
The idea is to wrote "res" files, wchich generating this "windows", and renaming it to VGUI name wchich I want to use, for example "MainBuyMenu.res", and of course real "MainBuyMenu.res" rename to "MainBuyMenu.res.backup" or something like this, and then, after "exit window" rename it again.
This integrates in user files, but I think it is a only "non that shitty way" to do it...