I thought those where your last two questions
You can change the cursor by going to BUILD GAME, then LEVEL SETTINGS, then click the Edit button to the right of the GLOBAL SCRIPT field and then look for the cursor image and you can change the menu cursor to just about anything you want. If you are referring to the gun cross-hair, this is not supported as most gun attributes are fixed such as what the gun looks and sounds like, where it is on the screen, etc. There are ways to change the cursor, but its hacky and you must be happy to go beyond the point of no return!
"We are the knights who say...eki eki eki fatang loopzoing, zanziga....ni"