This really aint to important but I'm sure quite a few people would like to create map overviews when releasing there maps

simply load your map, Make sure you have developer 1 on, then type this into the console :

dev_overview 1

the engine will draw your map as an overview image instantly, and then type "developer 1" to see data of the origin. The origin is needed for the overview speciation, otherwise the players will be placed incorrectly in the overview view. if the origin data is

"Zoom 1.63, Map Origin (1903, -1283, -200), Z Min 500, Z Max -1088, Rotated 0",

you define it in the txt file for your map in the overview folder. If your map name is cs_assault your txt must also be called cs_assault.txt here's an example how the txt file structure is:

// overview description file for cs_assault.bsp

global
{
ZOOM 1.63
ORIGIN 1903 -1283 -1088
ROTATED 0
}

layer
{
IMAGE "overviews/cs_assault.bmp"
HEIGHT -1088
}

Please be sure to resave your overhead images in 256 colours in .bmp format
Any questions then just contact me on tecmds@icqmail.com

Also this tutorial applies to any half-life mod