Calder 4D runs on Windows XP, Vista, or Windows 7 operating systems.  If you have trouble running the installed software, try this link to install updates for your computer:  Microsoft Updates     

If you are not sure whether your computer meets the requirements, you can find out by installing the demo using the link below.  It won't do any harm.  If it works fine, then your system meets the requirements.  If it doesn't work properly, you can use the Microsoft Updates link above to bring your system up to date, and then try the demo again.

Click here to install or update Calder 4D

Click the above link to download a free copy of Calder for evaluation, then follow these steps:

1) When the File Download message appears, choose the button that says "Run".
2) If you get a security warning, again click "Run".
3) Follow the instructions on the screen to run the setup wizard.
4) To run Calder, click on the Windows "Start" button and choose "Calder" from the "All Programs" menu.