Erm, could somebody teach me how to do a trigger for the zoom please?

[Miss_Foxy]

Well, my map happens to be a 'Small' sized map, and I was hoping to make it an 'Epic' sized map by making all units/shadows/buildings/selection circles/projectiles/terrain/doodads smaller while zooming in closer into the map so that I can make it look as if the map's huge (There's nothing I can do about the ground images size)...
I was hoping if somebody could give me a step-by-step guide on how I can make it zoom really close into the map at a certain area of the map where I choose at the start of the game and making that zoom stay for the rest of the game (For example, if a person tries to use the scroll, the view would automatically zoom back, like the one in 100 Rounds)...

Here's a summary for those who don't really understand the wall of text:

[These are mostly triggers]

• Zoom into the map at the start of the game at the area I want
• Zoom to the map whenever somebody tries to remove the zoom by scrolling
• Making the terrain image (The grass and such pictures on the ground) a bit smaller and less spaced apart
• Trying to make my 'Small' map look 'Epic' by scrolling all the sizes down and zooming closer
• Please leave a guide

Thank you so much...