unable to navigate in 3d achi 11

[Anonymous]

Ihave installed archicad 11 and I am unable to navigate in 3d. Please help.
SYSTEM:
VAIO INTEL DUAL-CORE
1.73 GHZ
1GB MEM
VISTA ULTIMATE

[Laszlo Nagy]

What exactly is it not possible to do?
Can you not use the Orbit method?
Can you not use the Explore method?
Does the model look fine in the 3D Window?
Does this happen with the Internal 3D Engine or the OpenGL Engine?

Your computer's memory does not seem to much. 1 GB is recommended for Vista alone.