Get a screenshot, and draw where you want your info box to be, with your menu on the screen, and I'll try my best to get it in there the way you want.
OR
Download SRB 2.6.2 cracked, and launch GTA, then open the menu (RB+X) go to admin options, then go to the bottom "SRB MAFIA OPTIONS". They have a rectangle Drawer in there and a text drawer, that's how I made my info box.
Use AP ii Intense's v2 script menu, it has draw tools in it including texture, text and a rectangle tool. It is a lot easier.
I just seen your screenshot, just increase / decrease the y axis, I can't remember which way it is for making it go down.