Playing Dead Air and Death Toll is VS mode

I yanked this from the Steam usergroups.
Play VS on the other campaigns
Get this file:

VS Map Pack

When downloaded extract the files and put all of the .bsp and .nav files into your

c:\program files\steam\steamapps\common\left 4 dead\left4dead\maps folder

the location of your steam install may vary from the steamapps directory down should be the same.

It's not a permanent solution but will give us something else to play in L4D. Please note that the textures of Windows/doors/cars and other objects will look a bit strange. Those objects will have a white glow to them.

h4x!

Might be interesting to mess around in but I'll let Valve work out the balance issues on these maps before I dig in.