UE3 - GoW Can you merge bsp brushs also a widget question

Just wondering if there is a way to merge bsp brushes into one brush in this case all the brushes are the same size in the z axis don't know if that matters with this engine or not. Here is a pic

I know I could add a brush then cut it to this shape hoping for a short cut.

Also how do you move the widget to a different starting point.
I have this terrain in a starter map the widget is along ways away from the corner of the terrain in the z axis its a real pain locking the widget moving it to the corner of the terrain mesh then unlocking it just to move the terrain a little. Then if for some reason I have to move the terrain again after selecting something else when I reselect the terrain the widget is again way up on the z axis. There must be some way to reset the starting point of the widget to a actor. I feel like such a noob thats alright this is part of the fun for me.

Thanks for the reply I can't seem to find a weld function.
Do you have a link to the tutorial that you are talking about?

Thanks Bazzwano but I already knew this just didn't build it that way and was hoping there was a way to merge instead of rebuilding the brush and cutting it.

Those tutorials I already have those. Thanks thou.

It's a hard habit to break not using piles of bsp brushs in a map.
As that is the way I have building maps for years. Mostly in the Quake series.
This engine is strange as in what it calls a brush you can make a very complicated brush in a concave shape and it still works, in the past I could not do that. This makes me think the engine is treating the shape of the brush more like a static mesh.

I just finished making some Gothic style arch tunnels out of brushes in a practice making brush work map. Started with a 16 sided cylinder then a vertex edited it into a straight tunnel with a arched ceiling. Ok thats simple right but it is convex and yet I was still able to save it as a brush and it works in the game.
Next I took this straight tunnel and made copies of it rotated one 90 degrees and then made a joining tunnel on a 45 degree angle I can then make one big brush that the covers all these tunnel brushes and then do a brush intersect and now have a single brush that is made out of all those brush in a very complex shape, this just seems like it should be prefab not a brush.

I do miss not being able to shape simple meshes into fancy curves like I could do in Quake 3 and 4 unless there is a way that I don't know about yet (that would be cool)