Quartus web edition installation problem on WinXP

Hello,

trying to install the 10.0sp1 version just downloaded. Extracted the download to C:\quartus_free

from command line tried running

altera_installer_cmd -t=C:\Quartus --temp=C:\QuartusT --source=C:\quartus_free\altera_installer\bin\ -i quartus_free -w

I get the following error

Traceback (most recent call last):

File "<string>", line 1444, in <module>

File "<string>", line 1438, in main

File "<string>", line 1198, in dispatch_command

File "<string>", line 440, in run_install

File "<string>", line 1073, in create_dir

File "windows32\build\pyi.win32\altera_installer_cmd\outPYZ1.pyz/os", line 150

, in makedirs

File "windows32\build\pyi.win32\altera_installer_cmd\outPYZ1.pyz/os", line 157

, in makedirs

WindowsError: [Error 123] The filename, directory name, or volume label syntax i

s incorrect: 'C:\\quartus_free\\altera_installer\\bin\\=C:'

can someone help me out if I'm doing something wrong please?