my first aros/icaros experience...

[Raffaele]

AFAIK, Aeros should deal with X-ORG graphic system, at least on Raspberry Pi hardware. Just reset it and re-config it with new screen resolutions. (suggestion point 2.2)

http://www.aeros-os.org/styled-5/

Alternative: Check VirtualBox howtos and learn how to change resolution in it.

Here is a discussion about a guy who got stuck with VirtualBox in 640x480

http://askubuntu.com/questions/452108/cannot-change-screen-size-from-640x480-after-14-04-installation-on-virtualbox-os

Here is a discussion on an Amiga guy who had difficulties with Menu width in DirOpus.

He got it resolved by locating and renaming .CFG file.

http://www.amiga.org/forums/showthread.php?t=30610

Try rename .CFG file and next time you run DOpus, make changes in Directory Listers "SOURCE" and "DESTination" and backdrop image, and then DirOpus will create another .CFG file.

(Either save yourself another .CFG with a name of your choice)