also what is a unit. are they those little purple things? AND HOW DO I CHANGE the pics form photorealistic to texturres for the game, and how do i change thier format
A unit can be anything. The smallest unit in the game as far as brushes are concerned is 1. I believe that refers to 1 texel. 1 texel can equal a foot or an inch or a mile depending on what scale you choose for your game. My BattleBees game has 40 units equaling 1 inch, and so if I make something that should be an inch in size in real life, it will need to be 40 units in my game. Now, on another game that I am working on, the scale is 12 units equals 1 foot. I just make sure all objects follow the same scale. You decide what scale is appropriate for the game you are creating. Just keep in mind that you can't make things smaller than one texel so consider that fact when choosing a scale.
As far as changing .JPEGs to .BMPs, that is done outside of RF. You need to do that with a separate application like PhotoShop. Gimp is free and does a lot of the same things as PhotoShop. After you tweak the JPEG to whatever size and appearance you want, you choose SAVE AS instead of SAVE. That way, when you save it, you can save it as a different file format instead of .JPEG. Just choose from the available list of extensions and choose .BMP.
one more thing umm how do i make doors and add NPCs, and how do you put modles in your world.
Doors can be created using the DOOR entity in your templates menu of RFEditPro. You need a model to associate the DOOR entity with. You can also create a brush that looks like a door, texture it appropriately and assign it as a model under the MODEL tab in RFEditPro.
You can add NPCs pretty easy. Just go to the Templates tab in RFEditPro and select the PAWN entity. Place that entity in the level where you want it. Once you have placed it, you can then click on it and edit the fields for it. If you see another lightbulb appear, you need to click the other arrow box in the tab above the views. Then, choose the .act file to use for the NPC such as ROBOT and choose a script that you want to use such as robot.s and you've got it.
I haven't started tinkering with placing models yet so someone else will have to answer that.
PS: Welcome to the forum. I'm fairly new as well so I haven't picked up on this board's netiquette quite yet.
#11. Thou Shalt Not Use Cut Brushes.
and now i feel bad cause I think that that was how I was first greeted... also I would like to say i still consider myself a n00b when it comes to game dev, thats just based on how much new stuff i learn every day 
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