Portal Vapnet på vanliga banor ?

* First off, backup up your entire Portal directory in a safe place. It’s the folder marked “portal” in ..\Steam\steamapps\(your_steam_id)\. We, nor Valve, take any responsibility in the unlikely event of you hosing your game files. Worse comes to worse though, you could always just redownload from STEAM.
* Next, download and install, if you haven’t already, GCFScape. This handy program will allow you to access the cached game files for any Source-powered game, in addition to several other Steam games you may have downloaded.
* Once that’s done, browse to the directory ..\Steam\steamapps\. There, you’ll see all the available GCF archives. We’ll start with Half-Life 2.
* Open the GCF marked “half-life 2 content.gcf” You’ll see a directory tree in the left pane. Click the box to the left of the folder marked “hl2″ to see the directory listing contained within it. Then, right-click “maps,” select ‘Extract’ and extract the entire folder into the directory \Steam\steamapps\(your_steam_id)\portal\portal. This will merge it with the existing Portal map folder.
* Do the same with the ’scenes’ folder
* Fire up Steam and run Portal. When it’s done doing its thing, open up the developer console with ‘~’ (you may need to enable it under your keyboard options).
* At the console, type “maps” to list all the available maps. Now that you’ve imported the Half-Life 2 maps, this will be a fairly lengthy list and some of the names, like citadel and canals, should seem familiar.
* Type “map” and then the map name to open that map. For instance, “map d1_canals_01″
* When the map is done loading, pull up the console again and enable cheats by entering “sv_cheats 1″
* To give yourself all weapons, including the portal gun, enter “impulse 101″
* Depending on how far you got in Portal, you may need to upgrade the portal gun to fire both portals. Enter “upgrade_portalgun” to do so
* Go lay waste to some alien scum with the power of portals!