CentOS 5 :: Installation Of GNS3 - "par@Paranor GNS3-0.6.1-src]$ ./gns3 Can't Import Qt Modules, PyQt Is Probably Not Installed ...error:"

I've one problem with the installation of GNS3. I've downloaded all the necessary package, i've all the dipendency satisfied and Qt4 is installed on my system, but when i try to start gns3 I receive: par@Paranor GNS3-0.6.1-src]$ ./gns3 Can't import Qt modules, PyQt is probably not installed ...error: " If I'll try to use setup.py:

[par@Paranor GNS3-0.6.1-src]$ ./setup.py
./setup.py: line 1: Setup script for the GNS3 packages.: command not found
import: unable to open image `sys': Permission denied.
./setup.py: line 4: syntax error near unexpected token `'./src''
./setup.py: line 4: `sys.path.append('./src')'

I've the same results if i give the command with sudo;. Consider that i'm working on Kernel 2.6.18-128.1.16.el5 on a notebook with AMD 64 cpu.