well, it had worked properly before I had to reinstall my Windows... i had a virus, after I had forgotten to activate my antivirus program....Anyway, after reinstallation of Win XP Professional there was a problem with 3D too.. - there was no option or tool that you could use in 3D window, after changing anything, AC was saying"bye, bye" and stopped to work. The graphic card works ok i think, at least it was, so I've decided to change the system - i have x64 motherboard and processor so I wanted to get x64 system - couldn't find XPx64Professional, so got bought Vista Ultimate x64, but it doesn't helped at all - Vista works O.k., there is no problem with axonometry, but...perspective...doesn't work at all in openGL.. cannot export file to Artlantis, cannot make a good render... Even when opening a little bit bigger project and have saved an internal engine as the one I want to open in 3DA, there is this annoying rapport about openGL.. nothing has helped yet...