I know I need a script and whatever in this, but I suck at scripting GUI's so much that everyone would laugh at how bad my attempts are, so I was just wondering how you center a GUI in the center of your screen. I know it's possible I just can't find it on the ROBLOX wiki.
Doesn't need a script, just change the position of the frame :)
http://wiki.roblox.com/index.php?title=Beginner%27s_GUI_Tutorial