I need some help to create a GUI (not a specific type, just one that will work). I know how to change the size and stuff and right now, I just need to know how to make an inventory bar (probably Monkey Island style). Thank you ;D
Click on the Custom Inventory button in the GUI editor and draw the inventory area of the size you wish.
See also the Inv Window functions/properties (http://www.adventuregamestudio.co.uk/manual/GUIInvFuncs.htm).